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Sea shells producing nitrites...why?
8/18/15
Nitrite spike, FW
6/15/11 Small nitrites spikes,
FW 3/15/11 Nitrite spike 7/10/10
Nitrite problems for my 10 gal sick
tank 1/15/10 Re: nitrite problems for my 10 gal sick
tank 1/16/10 Nitrite and Nitrate Problems Uncycled tank with nitrites -- reading, water changes and live bacteria are needed -- 06/28/07 Hello everyone. <Hi Melissa.> I purchased a 10-gallon a little less than a month ago. I conditioned the water, and let the filter run for 3 days. I then purchased a Glo fish as my starter fish. Not knowing much about the nature of schooling fish, or the nitrogen cycle, I purchased two more GloFish shortly thereafter. To make a long story short, they all died. So, I purchased one more GloFish and left him in there by himself for about two weeks. Feeling confident with the stability of my tank, I then purchased two black Lyretail mollies. Unfortunately, they were picking on the GloFish, so he has been removed. The mollies are looking great, so now to my question. I do water tests frequently, and a very recent test showed that my nitrites are high (about 2 ppm) and my nitrates are just slightly lower (around 15 ppm). I'm not sure how long the cycle takes to complete (I've heard 4 to 6 weeks) but I do know that nitrites are very dangerous. However, everything else (ammonia, ph, etc) is at its appropriate level. I have good filtration, plenty of salt to suit them, and some live plants which were added two days ago. I also did a 15% percent water change just a few days ago to try to reduce the nitrites, but they have not come down at all. <A 15% water change will decrease nitrites by 15%. In your case that's not even measurable with the standard tests. To decrease them to 0.4 change at least 80%.> Are the high levels to be expected, if the cycle is almost complete? <No. Your cycle is complete when the nitrites have spiked and fallen back to 0. Only then the first fish should be added. Personally I do not like the idea of fishes in an uncycled tank. Live bacteria from the filter of a running tank or the LFS fridge (BioSpira) can be used to instantly cycle a tank. > Or is this a serious problem that needs addressing? <Additional problems cannot be excluded now. Overfeeding is one possibility. Only feed as much as is eaten in a few minutes. If the nitrites aren't absent within a week consider additional factors that could prevent your tank from getting properly cycled. In the meantime read some more on the nitrogen cycle and the needs of the fishes you want to keep. Lots of information as well as a handy search panel are available at WWM.> Again, the mollies don't appear unhealthy in any way, and I would like very much to keep them healthy, so your help would be immensely appreciated. <Some types are quite hardy. Anyway, do large water changes and possibly get some bacteria from a running tank to minimize any permanent damage due to the exposure of toxic water conditions.> And depending upon your response, I would like to add a couple more of the little guys, so let me know if this is a safe decision. <Too early. Wait until the nitrites are 0 and be sure to read before you purchase.> Thank you so much for taking the time to read my ridiculously long question and I look forward to your reply. <Hope that helps. Marco.> Sincerely, Melissa. Recovering from a nitrite spike - 06/27/07 Hi Crew, <Ave.> Last month I started a 55 gallon freshwater tank to replace my badly overcrowded 20 gallon. Long story short, I rushed the process and ended up with one hell of a nitrite spike once all the fish were in the new tank (probably an ammonia spike too, but I was careless and didn't have an ammonia testing kit at the time so I don't know). Nitrite levels were off the scale, at 10 ppm or more. Thanks to extra water changes, StressZyme, and time, the level is back down to 0, but I'm worrying about the aftermath of the spike. None of my fish died and most of them never seemed affected at all, but a few of them are looking a little ragged. A small peppered Cory has frayed fins, and his gills look a little pink when viewed from behind. My three boesemanni rainbows all look as if they've lost some scales around their faces, their mouths look rough instead of smooth, and their tails are a little frayed. Finally my java ferns are all spotty and brown. What can I do to help my fish and ferns recover? <The fish will recover, assuming water conditions are sound. Treating for Finrot/fungus is also essential, given the amount of damage the fish seem to have taken. The plant will be fine. For plants, ammonia and nitrite are just fertiliser...> The other inhabitants (some from the old 20 gallon, some added just before the nitrite spike): 4 tiger barb 2 other peppered Cory 1 African butterfly (Pantodon) 1 6-inch green Severum 1 4-inch common Pleco 1 4-inch Senegal Bichir <Now *there's* a random selection of fish. I'm surprised the tiger barbs haven't pecked the Butterflyfish to death yet. Those two are a classic "don't mix" combo! Presumably you realise the Severum, Plec, and Bichir all can reach fairly substantial adult sizes. Your 55 gallon is fine for them, but don't forget that filtration has to scale up as well. Given you're growing Java ferns, I'd be tempted to use an undergravel filter with two powerheads plus two medium or one large external canister filter. Ideally, these would be rigged as a reverse flow system (i.e., replace the powerheads with the outlets from two external filters. This will give you lots and lots of biological filtration plus very effective mechanical filtration -- the ideal for such big and messy fish.> I feed them a mix of flake food, small cichlid pellets, fresh greens, blood worms, brine shrimp, and an occasional live insect (not all at once of course - I mix it up from day to day). Ammonia is 0, nitrites are 0, nitrates are about 30 ppm. I keep the tank at 78 degrees F. <Sounds fine.> Oh, and one last question, off-topic from the nitrite spike - my Bichir absolutely loves the small cichlid pellets, but they're big enough that he has a lot of difficulty swallowing them. Should I quit using them, so he doesn't hurt himself? <He's fine. Bichirs feed extensively on shelled invertebrates and have very strong jaws. More importantly, fish don't "choke". The only reason humans choke is because of where the larynx is situated relative to the trachea and esophagus. It's a classic evolutionary compromise between being able to speak but at the cost of greater risk of choking. Most other animals don't have this arrangement, and fish certainly don't, and once the food is in the throat it's soft tissue all the way to the stomach with little scope for harm or damage. Indeed, many fish deliberately pass solid food to the throat where special teeth (called pharyngeal teeth) grind or chop up the food item.> Thanks for your help. I love what you're all doing through this site. -Michael <Thanks, and hope this helps. Neale> Re:... NO2 follow-up... need to match, find... and train Neale to apply useful titles... - 05/02/07 Neale & Crew, Whew! You don't disappoint on the "brutal honesty!" Thanks (wry smile). <Hah!> So far, since Saturday night's water change the nitrites & ammonia have been at "0," and I am keeping a close eye on them. I think I was lulled by the test strip's wording regarding nitrite levels: "caution" for .5 ppm, "stress" for 1 ppm, etc. Since mine never quite made it to .5 ppm, I never fully realized the danger, though I knew the goal was "0". I don't say this as an excuse, as the info is out there, but as a warning to others new to fishkeeping. <It's an easy mistake to make. The sensitivity of fish to ammonia (and nitrite) depends on many factors, and while I'm sure your fish will survive at 0.5 ppm for a few days/weeks, it will certainly stress them, and be a factor causing the problems.> I also didn't realize the charcoal element, made for the Aqua-clear 30 filter, was useless or worse with a cycling FW aquarium. Thankfully, I did have the biological element in! <Carbon serves a very specific purpose, but I'd argue that in a freshwater aquarium it's of minimal real value. Possibly more useful in marine tanks.> Also, I was thrown by the long, white stringy stuff, and the fact that only two of them appeared actually stressed or unhappy. My remaining question: You never said, but should I assume you are implying that the fecal symptom is water quality symptom, or food issue? They had been eating both veg.s and omnivore flakes. I could pass the Omni food off to a neighbor. <Long stringy faeces in fish usually implies a dietary imbalance. Not necessarily critical every time you see this, but if persistently showing this symptom it is a warning that the diet you are offering isn't quite right. Certainly adding more fibre (greens) to the diet and using "natural" foods like frozen bloodworms instead of "processed" foods like flake will help. It's essentially constipation, and fish get it for the same reason we do.> Also, I am afraid a lot of us newbies are making the mistake of putting platys in tanks under 10 gallons, as I have seen a number of posts that show that. <Ten gallon and smaller tanks are inexpensive, easy to set up, and widely sold. Hence, there are a lot of them about. I have two tanks about this size, and very useful they are, primarily for rearing baby fish. The problem is that for any fish larger than, say, a neon, a 10 gallon tank is very confining. Yes, you can keep a platy inside one, but given a platy reaches a fair size when mature, it isn't comfortable. A 20 gallon tank is marginally more expensive but gives you so much more space to work with.> Thank you for letting me, and others, know. Of course, the LFS wouldn't tell us that. However, after doing a bit of digging around the internet, I found that my tank dimensions are for a fairly standard ten gallon aquarium. When I said "approximately 7.5 gallon water volume" I was conservatively estimating the amount of water in the tank (I wasn't certain of "tank size" as it came to us second hand and the tank volume calculator I used wasn't clear on whether they meant interior or exterior measurements... obviously another important fact that I needed to know from the beginning). <Don't forget that once you add the filter, heater, sand and any ornaments, the average aquarium will only hold around 80% of the water it says on the box. But I agree, estimating tank size isn't always easy. I wrote a little freebie program called Fish Tank Tool for Mac and Windows that you can download here: http://homepage.mac.com/nmonks/software/index.html . It basically works out the volume and helps calculate various things like how many fish you can keep in it. Try it.> So, hopefully the kids can keep their platys, although obviously four fish were too many for an uncycled tank. In fact, I wouldn't put fish in an uncycled tank at all if I had it to do over again. <Platies are excellent fish, and trust me, well worth spending tome learning about. The livebearer group generally is one of the most fascinating groups of fishes, and once they start making babies you'll have lots of scope for educating the children about how the behave and breed.> As for the salt and platys, it is sometimes recommended at WWM, though perhaps in "aquarium" form rather than plain old NaCl (?). <Aquarium "tonic" salt, which is essentially NaCl identical to non-iodized cooking salt, can be used therapeutically for certain things. But most people use it merely as an additive, and at the doses used serves no real function. Platies certainly don't need it. The only thing you might add to the aquarium would be something to harden the water and raise the pH, if your water was soft and acidic. A half or quarter dose of Tanganyikan salts would work great for this.> I won't argue the point with you, as I planned to phase the salt out after cycling, for the benefit of the plants. <Most aquarium plants DO NOT like salt. Whilst there are a few brackish water tolerant plants in the trade, the list is quite short.> And what do I know anyway? Apparently, not much! (again, wry smile) But I'm working on that. <Sit back and enjoy the fish. Wait for things to settle down and water quality to improve. When the tank has cycled, you can add more livestock if required. Oh, and by this point you'll be an expert itching to move onto another tank with bigger and better fishes!> Thanks again... I'm sure the fish would thank you too, if they could. <So longs as they fishes are happy, my work here is done.> V. <Cheers, Neale> Re: nitrite problem Dear Crew, <Hello, Ronni here today.> Since the end of Jan. my Betta has been in my 10 gallon tank following a disaster in my 30 gallon tank in which she was the only fish to survive. I rinsed well, then added clean aged water (ammonia, nitrites, nitrates = 0), a heater, thermometer, and new box filter containing new floss and new Eheim sintered glass substrate for biological filtration, no gravel in tank. I knew the tank would have to cycle. After several weeks nitrite levels increased higher than my test kit could measure (over 5 ppm). For the past 6 days I have been vacuuming daily and doing daily 50% water changes (source water is kept in a barrel and aerated) and managed to bring nitrites down to about 2 ppm. Last night I got fed up. I temporarily moved my fish to another bowl and got rid of all the water in the tank. I scrubbed it out with salt water. Poured boiling water into the tank and let it stand. Rinsed it well and rescrubbed with salt and water and rinsed again. I figured that would kill anything that was lurking around. I also rinsed the thermometer and heater. I filled the tank with water that had been heated and aerated for a week. Ammonia, nitrites, nitrates were 0. Put my fish back in. This morning (12 hours later) nitrites measure 0.5 ppm. My nitrite test kit is not the problem. WHAT IS GOING ON?? Where am I going wrong here? I guess the tank never cycled - don't know why, but even so, how could nitrites rise so quickly? Judy <It may just be that with only the single small fish in there the tank was taking a while to cycle. Now that you've started over, do daily water changes to prevent the nitrites from getting out of hand again. It doesn't always happen but sometimes nitrites will rise rapidly and that could be what you're seeing. You might want to go to your LFS and get a bacterial start; this will help speed up the cycling process and will make it easier on your fish. Ronni> Nitrite And Ammonia Problems In A Big Tank 12/21/06 I adopted a 150 tall FW tank with a sand bed, two bio-wheel filters, one canister filter, several pieces of driftwood. Living in it our 4 grown Severums, 2 grown Jurupari, 1 2.5ft fire eel, 3 African clawed frogs, 1 small Knifefish, 1 Pleco, and 2 3 to 4 inch eels. I have had it running for about 3 months. It seemed to cycle the first week I had it (even though we moved it entirely and saved all the media) - with nitrites and ammonia levels going to 0 after numerous days of massive water changes My problem is that about every 10 days the nitrites and ammonia test heavy again. I repeat several days of massive water changes and it returns to a clean state. But without fail about 10 days later it goes off the charts. A local fish guy suggested that the sand bed is responsible. I took about 1/2 the sand out - from 3 inches to about 1.5. but it did not stay clean. I have also put ammonia rocks into all the filters - but they have never "turned green" which I was told means my ammonia test kit is giving me a false positive. I am willing to replace the sand with gravel and even install UGF is necessary - both ideas have been suggested. I do not overfeed. There are no dead fish. There is ample biological media in both wheels and in added media in all filters. Any ideas? Does sand in a FW present problems. I have 12 other tanks and everyone is cycled and stays that way. Thanks Tim < Do a 50% water change, vacuum the gravel and clean all the filters. Chemical waste levels should be down to zero. Feed as you normally do and test the water daily. I think you will find a logarithmic but gradual increase in these levels over a few days before they peak. The Bio-Wheels are great little inventions and you are correct that they should be handling all the bioload for this tank. The problem is in the canister filter. Food/waste gets trapped in the canister filter and there is very little oxygen in the canister for the bacteria to live on and break down the waste. So now the fish are generating biological waste and so is the crap in canister filter. The outflow of the canister filter has no measurable oxygen so bacteria cannot live and break down the waste. I would recommend that you add a bio wheel attachment to the canister filter outflow before it goes back into the tank and that you vacuum the gravel every time you do a water change. If the driftwood is not suitable for the aquarium then it could be rotting and contributing to the problem.-Chuck> Old mail (Nitrite poisoning) - 7/2/06 Hi guys. <Elise. Please accept my sincere apologies for the delayed reply to this. My mistake.> I'm a newbie here, and I've been spending the last few days researching your site for my problem. I have learned a lot, and I appreciate all this information being available! I understand now about the nitrogen cycle, but I'm still uncertain how to rescue my current situation. I have a long-established 20 gallon with three Dalmatian mollies and two neon tetras. Two Dalmatian fry were born in October and nine more in November. I began seriously overfeeding, which I now understand was a terrible mistake. <Yes... an easy mistake to make.> I lost two of the fry to the filter, two didn't grow much and died, one didn't grow at all and I never found the body. I have searched the filter, ornaments, and vacuumed aggressively, but couldn't find it. Of course my overfeeding led to ammonia, a case of Ick, at which point I learned from the pet store how overfeeding had poisoned my tank. To try to rescue the situation, I have done the following: I gave one dose of CopperSafe for the Ick (a week ago, fish is cured). <The life cycle of Ick is longer than this.. for much of the life cycle the white spots are not visible. Do continue the treatment as directed on the bottle.> I increased the temperature to the mid-eighties, and added aquarium salt. <Great... this alone is actually what I have found to be useful and often recommend for treating Ick.> I have also been using Cycle. <I would not add this product to a tank with fish in.> I added a little sponge filter to the bottom to increase aeration. My ammonia went down, then the nitrites spiked off the charts. I tried several large water changes, but the nitrite level would still test to an "off the chart" level, even right after the change. The fish are behaving fine, so far. I have read what I perceive to be conflicting advice regarding whether or not to change the water. I felt that the nitrite level was extremely toxic, and I believed my fish would surely die if I did nothing, so I performed several water changes adding salt, Aqua Safe, and Cycle to the new water before adding each time) After a few days of this, this evening the nitrite finally went down to .5ppm after a 75% water change. However, my ammonia is back up to .25ppm. Fish still seem fine. <The salt is countering nitrite toxicity.> Should I continue these water changes? <Yes, but ditch the Cycle. You will find it is adding to ammonia / nitrites.> Tonight I added a Bio Wheel filter, and I left the Aqua Clear filter operating as well. I am setting up a ten gallon tank. My plan is to cycle it first and then put the four youngest fry there, in order to decrease stock. I am wondering if I should consider using this tank as temporary housing for all the fish until things calm down in the 20 gallon tank? <I would keep them in the present tank, and put one of the filters on the other tank after 2 - 3 weeks.> Is there anything else I should do/shouldn't be doing? Thanks in advance, Elise <Best regards, John.> Dangerous nitrite levels in 3 week old tank--help our poor fishie! Help them yourself... only you can 1/26/06 I'm sure you've had these questions many times before, <If so... our responses would/will be posted on WWM> and I'm sorry about that, but things are getting pretty dire here. We've got a new 10 gallon tank (about three weeks), and the nitrite levels seem to be dangerously high, though ammonia seems to have cycled nicely. <Numbers please> I'm very worried about our lionshead, though, because nothing that I've been able to do (partial water changes, treatments) are taking the nitrites down. <? Dilution should lower correspondingly... chemical filtrants> I've had lots of different advice from people at the store I bought the tank, up to and including "forget about it, there's nothing you can do." What can I do to help her out while the tank is still cycling? <... posted> Will the tank continue to cycle if I take her out entirely, or will that just stop the process? I don't want to overdo things, but we're really very concerned that the nitrite levels are well into the toxic range, and don't know if it will be a few weeks before the nitrites come down, and if she'll make it. What can we do here? Even though we've only had her a few weeks, we can't bear to lose her! Thanks! John <Please... stop being anxious, and stop writing... and read. Bob Fenner> Re: Update...Dangerous nitrite levels in 3 week old tank--help our poor fishie! 1/27/06 I know I only wrote you yesterday afternoon, but I have to head off to the office now and won't be back till tonight, so I thought I'd better write you now with the update, and maybe if it's not too much trouble you could possibly answer them together. <Already responded to> The nitrite levels remain just as high, and my ammonia test this morning surprised me by being right about where was over the weekend, though not I think at a dangerous level. <? Numbers> She's <Who?> developing some grainy patches along her sides, but not enough that I can tell whether those and the little bits of white on her cap are just natural or stress or disease She's still eating and bopping around like crazy, but the grainy bits and things seem more pronounced. Is it really just a waiting game (she's been in the tank 18 days now and it's not getting better yet) or should I be doing more water changes? <Would they help?> I'm leaving the gravel alone now, having had what I thought was bad advice at first to clean it regularly, and lots of conflicting advice from what's supposed to be the best fish supply place in town! But we're a bit more worried every day--is there anything we can do here? Would putting in a little cleaner spring water help? Would Bio-Spira help or hurt at this point? <Would help> We've grown so attached to her in the few weeks she's been part of the family! Thanks again, so much! John <Keep reading. Bob Fenner> Thanks! Found a lot of helpful info we'd missed the first time. Keeping our fins crossed, and thanks again. <Ah, good. Welcome. BobF> High Nitrite 1/23/2006 Hello crew, <<Hello Elise>> I'm a newbie here. I've done a lot of research on your site over the last couple of weeks, thanks so much for all the info! I'm still unclear on one thing regarding high nitrites. Here's my situation: I have a long-established twenty gallon with three adult Dalmatian mollies and six fry. I have an Aqua Clear filter which I've maintained as instructed and just added a Bio Wheel. Due to my ignorance, I drastically overfed and conducted water changes with ammonia-laden tap water. <<Please test your source water before adding to your tank.>> I have passed the ammonia spike and am currently experiencing the nitrite spike. It was testing off the charts before I conducted several water changes (with bottled spring water) to bring it down. I QT'd one of the adults, who was looking pretty sickly, she's better now. <<How was the quarantine tank cycled?>> I raised the temp to the mid eighties and added salt. What I am confused about is this: I keep reading "dilution is the solution" <<Yes.>> but I also read "every time you change your water you start your cycle over, you need to leave it alone". <<Some feel it may delay the cycle. Most of the bacteria reside on substrate and hard surfaces in your tank, and primarily in filter media, not in the water column.>> So, I am unsure how to proceed, should I do just enough water changes to keep the nitrite to around .5 or .25, or should I let it ride, or should I change the water enough to bring it to zero? <<I would perform large enough water changes to keep the nitrite to an absolute minimum. You may have to do changes more than once per day to do this. Aim for 0 and keep it there with many small water changes. If you have access to a product called Bio-Spira, do a large water change and add the product directly to your filter. Bio-Spira contains live bacteria that will perform your bio-filtration. Please keep testing your source water for ammonia, and to match the pH of your tank.>> Obviously, my goal is to not lose any fish! Thanks again for all your help, this site is the greatest!! <<Glad to help. Lisa.>> Elise High Nitrite II 1/23/2006 Hi Lisa, <<Hello Elise>> Thank you so much for the quick response! <<You are very welcome>> I'd like to respond to some of your comments. I've been doing water changes a couple of times a day to keep the nitrite down, so glad to hear I'm on the right track. I also just ordered Bio-Spira this morning from the fish store, <<Are you in Canada? I'm in Toronto, and ordered it from the fish store as well with great results.>> so thanks for validating that decision as well! Regarding my QT tank, well, it's not cycled. I set it up with some gravel from the existing tank and 100% new water. I knew this was not ideal, but she was near death and I was desperate to save her, so I pulled out all the stops. I've been medicating her with Maracyn two and copper and doing 50% water changes every day. <<I would stop medicating, this is a water-quality issue, not a disease.>> I had ammonia in there for a couple of days (unfortunately I set it up before I discovered my tap water has ammonia), now I have nitrite, but I've not let either go above .25ppm by doing water changes. She seems completely fine now. My plan is to leave her there for two more days until I'm done with the Maracyn 2, then put her back home. Regarding my source water, I stopped using tap after it tested positive for ammonia. My LFS recommended bottle spring water, so I've been using that. <<I have never used this personally. I would look into an RO unit personally>> I tested it for ammonia, nitrite, nitrate, and chlorine, and all results were zero. The only problem is the PH is 7.6 instead of 7.2. I've read that Dalmatian mollies prefer the higher ph, so I didn't try to change it. I hope I didn't shock them too much. <<Consistency is better than accuracy>> I have now done several changes with the spring water. All the fish seem fine. They are quite active, and seem starving! I've been feeding them next to nothing. Any further advice regarding the PH issue? Thanks again so much for your help. <<You're welcome>> I'm so glad I found this site! <<Me too.>> If I had listened to my LFS, all my fish would be dead. They told me not to change the water at all! Elise <<Good luck. Lisa.>> High Nitrite III 1/23/2006 Hi again Lisa, <<Hello again Elise>> What's an RO unit? <<Reverse Osmosis unit, covered widely on WWM.>> To answer your question, I live in Florida. The fish store is 2nd day UPSing the product with cold packs. They insist that will work. <<It worked for me and I am much farther than you!>> So I just pour it right into my filter while it's running? <<You got it.>> I got the amount for a thirty gallon tank. I'm thinking I can put two thirds of it in the twenty gallon and one third into my ten gallon QT tank, which I would like to cycle and move a few fry into. <<Sounds good.>> Thanks again! <<Anytime. Good luck. Lisa>> Elise High Nitrite IV 2/2/2006 Hi Lisa, <<Hi Elise!>> Just wanted to write and thank you again for all your help. I never did use the Bio-Spira, the tank cycled on its own. I had ZERO fatalities, thanks to the large and frequent water changes that you had me do. <<That is SO very wonderful to hear! You need the credit, though, for keeping on top of things and getting such amazing results. You've made my day :)>> Thanks again for all your help! <<You are quite welcome. Feel free to right again, should you need my help. Lisa.>> Elise Nitrite problem 12/26/05 To crew at wet web, I have been having trouble with my nitrite for sometime. I have done everything I can think of to fix this problem, but nothing seems to help. I have reduced feeding, partial water changes, added stress zyme, used Nitrazorb in my filter, but it still is staying constant at 2.0 ppm for about two weeks now. I have a 55 gallon tank with a small Oscar, 2 baby Dempseys, a blue phantom Pleco, and a common Pleco. this is only a temporary for the Oscar until I get my 112 set up. The 55 has been running for about two months now, and I have performed gravel vacuum and 25% weekly water change ever since the start. Oh if your wandering about filtration I have a penguin 350 with bio wheel, a top fin 60, a Fluval 304, and an underground filter with a power head. please help if you can my Oscar is starting to swim awkwardly. <as you know nitrite is very HARMFUL to the fish! I would continue to do water changes, feed sparingly, etc. It sounds like the biological filtration in the aquarium is weak...the denitrifying bacteria has not established itself enough yet. Luckily you have tough fish. I would just perform water changes...remember dilution is always the solution! good luck and happy holidays, IanB> thanks for your time and merry Christmas, Carl Regarding Nitrites in newer tank 10/16/05 Hi Bob. <Marcin> I have been running my 55 gallon tank for a week now with tetras small rainbow sharks and 2 Plecos. Last time I checked my ammonia and nitrites the ammonia was at 0 and the nitrites were at 0.1. I have since added a live plant into the aquarium and when I checked my levels again the ammonia was 0 again but the nitrites were 1.6 mg/L. <Mmm, too high> Should I do a partial water change or feed the fish a lot less food? <Yes... posted on WWM... Please read here: http://wetwebmedia.com/FWSubWebIndex/fwestcycling.htm and the linked files above> Thank you P.S. all my fish seem healthy with no visible signs of stress. <Shows later... or not at all... or just dead animals. Bob Fenner> Nitrite Spiking? - 09/30/2005 Hi y'all I visit this forum frequently and have a question. <First off, let me please apologize for the delay in my response. I've been a touch ill and didn't realize I had some questions still in my inbox! My deepest apologies....> I have a 30 gallon tank (current inhabitants 3 Platies, 6 cherry barbs, and a Pleco) that was previously cycled (no ammonia or nitrites). I noticed yesterday (9/19/05) that my filter outflow seemed slowed down somewhat so I swished it around in some tank water from a water change, and I did a deep gravel vacuum. I tested today and I have 3 ppm nitrites! Did I get to vigorous when I did my tank cleaning? <Entirely possible.> I did a 25% water change today, but the test has stayed the same. <Might want to go with a bigger water change. Also, I recently (9/15/05) added a school of cherry barbs (6 to be exact) could this be what's causing the current spike? <Mm, possibly, but more likely from disturbing too much of the biological filtration in this system.> All fish look good, but it has me worried. What do I need to do? <Just water changes to drop the nitrite, and test your water as your biological filtration reestablishes itself. Wishing you well, -Sabrina> High Nitrites in a FW tank 8/4/05 Our nitrite levels keep soaring and we don't know how to get them down. I need answers specifically for my tank situation. We have a 25gl tank with a tiger Oscar, three Rosey barb, and three tinfoil barbs who all seem to be doing just fine and playful. The ammonia and everything is perfect. We started this cycle about two months ago. We have done a 25% water change everyday sometimes two to three times a day and the nitrites would maybe go down a little from 2.0 - 1.0 to .50 - .25. Then the next day its right back up again when I go to change the water. We use water from the tub and put in AquaPlus to make it safe for the fish and keep their protective coats. We also use Cycle to promote Bacteria growth. We just replaced 16 gallons today and then did another 8 gallons and that brought it down to .25 we're thinking about doing another one in a bit. Also a couple of days ago we added a Nitrite filter. We only feed the Oscar One pellet every Once in a while. The other fish eat what the Oscar leaves behind. There is also this rust color on some of the ornaments. For filters we have two undergravel filters manned by air pumps and an electric side pump filter. We have three 20 gallon pumps and one ten gallon pump manning the underground filter. What more can we do to balance out everything and get a good cycle established. We live in a small town so our supplies are limited we have only one fish store called the Fish Bowl and a Wal-Mart. So far they have had what we needed. Reply ASAP please Thanks K_italian < Next water change you can gently vacuum the gravel. This will open up the undergravel filter while removing the muck that may be driving the algae up and creating the "rust" on you ornaments. Feed only enough food so that all of it is gone in two minutes once each day. Check the tap water for nitrites. In some agricultural areas the tap water is high in nitrogenous waste-Chuck> Nitrites on the Rise Man oh man is the nitrite rising!!! My biggest fish just died today and I'm QT the next fish that looks the most unhealthy hoping I could save him!! So every day I should vac out the gravel? Is there anything I could add to the water to make the nitrite go down? I also don't understand how these fragile babies are living and the hardy larger fish are dying? <Get some Bio-Spira from Marineland. This stuff has the good bacteria in it and should help bring the nitrites down. In the meantime try some AmQuel plus by Kordon. It will bind up the nitrites until the bacteria get going.-Chuck> High Nitrites with Goldfish okay sorry to bother you again. < No problem, that is why we are here.> I just did a 25% water change and did a water test. The ph was neutral and has borderline soft and hard water but however my nitrite is pretty high. My fish still on the floor and not eating and swimming as much. I added salt as recommended. How would I do to help bubba and lower my nitrites. < Clean the tank. Vacuum the gravel to remove the waste that has accumulated there and clean the filter. Feed only once a day and only enough food so that all of it is gone in two minutes. Remove uneaten food after two minutes. If Bubba is not eating he may have an internal bacterial infection and need treating with Metronidazole.-Chuck> HIGH NITRITES Crew, I've read through the cycling and nitrites FAQ's and couldn't find a direct answer. I'm currently in the process of cycling my 75 gallon freshwater tank. I'm cycling without fish and using pure, store-bought ammonia to feed the populations of chemo-autotrophic bacteria (ammonia eaters). On day 17 of the cycling process I received my first reading of zero ammonia. I feed the tank half a teaspoon of ammonia daily to keep the "ammonia eaters" from starving while waiting for the nitrifying bacteria (nitrite eaters) to become established. My nitrite readings are literally off the chart however. Twenty-four hours ago (cycling day 19) I added Bio-Spira (90 gallon size) to the tank. Today my nitrite readings are still way off the charts. Now to my question. Will this incredibly high nitrite reading have any adverse effects on the development of my "nitrite eaters" (i.e. reducing oxygenation to them)? <No. Just like it took a couple of weeks to develop the ammonia eaters, it will take a little time to get the nitrite eaters going. It is hard to tell in just 24 hours when both nitrite readings were off the charts. Normally it would take another two weeks to get the nitrites down, but it will be quicker since you have used Bio-Spira.> My tank is drilled and connects to an AMiracle wet/dry sump with about 200 1-inch bio-balls for bacteria colonization. My temperature is at about 85 degrees, and I have been cycling without the lights on to reduce algae growth. Thanks in advance, Mike < Go to Marineland.com and go to Dr. Tim's Library. There you will find some good info on cycling a new tank. Especially the article titled "The First 30 Days".-Chuck> Nitrites in a F/W System I think I should have been more clear in my question regarding the cycling process on my five gallon tank I'm preparing for my Betta (Flash). I am doing fishless cycling, and fully understand the sequence of the cycling, fish waste- ammonia-nitrite-nitrate, etc. My question is: is it unusual for nitrates to be present for two weeks with no change in the high nitrite level? I was under the impression that most of the wait is waiting for nitrates to become present in the water and then the nitrites would decline. If that's true, why aren't my nitrites budging? Or is that where I'm mistaken? Would you still recommend the 30% water change, wringing out the sponge filter and a gravel vac. Now that you know there are no fish in the water? Thanks again, hope I was more clear this time. Kim L. <You can expect nitrites to take about 2 to 3 times longer to crash than did ammonia. With no fish there is no reason to do a water change yet. Only rinse out the sponge if it is becoming clogged. Remember this is a biological process, not a chemical one. As the bacteria start to become established it normal to see nitrates climb slowly as nitrites stay steady. As your bacterial colony grows you will get stronger bio filtration which will knock down the nitrites more quickly. Just hang in there, all you need is a little more time. When both ammonia and nitrite stay at zero, do a 20 to 30% water change and stock your Betta. Don> Nitrite Problem in F/W System Hi, I'm hoping for some help specifically to my situation. I've read through many of your articles & F&Q's. I've learned a lot about nitrites and nitrates. After reading them I'm convinced there is something wrong with my fish/tank. I have 2 Convict Cichlids in a 20g tank. A Whisper 40 filter and 100w heater. The water temp fluctuates between 75-78 depends if the light is on or off. 2 inches of gravel. No live plants. Terracotta pot, rock that looks like a cave and sunken ship decor. The pot, some of the plants and the rock were transferred along with the fish from a 10g tank they grew out of . They've been in the 20g tank for about 1.5 months now. The male is about 3.5 inches, the female about 2.5. I've had these fish since May 2004. Never a problem with them. They show typical cichlid behavior (hiding, occasional chasing, egg laying, etc.) Lately they've become distant from each other. Usually they're pretty compatible but now they are less active. They don't seem ill. All I have is a test strip test-kit to test the water. I don't know how accurate these are but it's telling me the nitrites are at the highest most dangerous level 10. Everything else, nitrates 40, hardness 150, alkalinity 300, ph level 7.8. I know I've read that convict cichlids are hardy fish but seeing that reading of the nitrites is alarming. I've changed the water weekly but only about 15%. Should I be taking more water out? I've also replaced the filter cartridge twice. Also, there was a rust-like slime on the pot and rock that I cleaned off with the last water change if that helps at all. There was never anything like that growing on those items in the 10g tank. I don't have an air pump because they told me at Petco that with my filter I didn't need one. Would that make a difference? When I do water changes I use distilled water to replace the water taken out. What am I doing wrong that is causing this problem? Never had this problem with the 10g tank which is now occupied with Neons and a few .5 or smaller baby cichlids. Please help!! Thanks, Mauree < Do a 30% water change with treated tap water. Rinse out the filter cartridge under a high pressure garden hose and replace it. Vacuum the gravel while doing your water change. Keep the nitrates under 25 ppm with water changes. Either change more water or change it more often. For example, if your nitrates were at 50 ppm then you would need to do a 50% water change to get the nitrates down to 25 ppm. Feed only enough food so that all of it is gone in a couple of minutes each day. Excess food gets caught in the filter and adds to your nitrite woes.-Chuck> F/W Nitrite Problem - II Hi Chuck, Thanks for your help. I have a few more questions though. I was wondering if it would help to get a bio-wheel filter. < Absolutely! Oxygen is the most limiting factor of nitrification and the bacteria don't have that problem that live on the bio-wheels.> I was reading that those types of filters are good for getting rid of ammonia and nitrites as the wheel spins. Also, would Nitrazorb help if used in the filter? < These resins absorb certain types of nitrogen but it is still in the tank and may nitrify into other compounds like nitrites ands nitrates.> I've used distilled water in the past for the 10g tank and never had problems. I'm fairly new to this as the Cichlids were my first experience. (They were given to my daughter from a school teacher.) I thought I read something in one of the F&Q's about distilled water not being good for water changes. How about drinking water? I am going to start storing prepared tap water (read the WWM info) but for now (today) what should I do to my water before I do the change? Can you recommend a tap water treatment? I have on hand "Cycle", and Bio-Coat. Are either any good or should I get something else? < Go with the Bio-Coat for now then change to Amquel when it runs out.> And how long after treating it with one of these solutions do I have to wait to change the water? < You can change the water right away.> Sorry for the overload of questions but I've become attached to these little guys. BTW, WWM is awesome. < Thank you for your kind words. We are trying to keep people in the hobby one question at a time.-Chuck> |
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