FAQs about Live Rock
Related Articles: Live
Rock, Reef Systems, Refugiums,
Related FAQs: Live Rock, Answering
Some LR FAQs by James Fatherree, Live
Rock 1, LR 2, LR 3, LR 4, LR 5, LR 6, Curing Live Rock, LR Life Identification, Live Rock Selection, Shipping/Moving, Placement, Lighting, Water Quality, Live Rock Studies in Fiji Collaboration
& Charts, Copper Use, Marine Landscaping, Marine Biotope, Sumps, Refugiums, Faux Rock,
After a year... maybe 1.5 year, it's a very good idea to
add to, replace about 10-15% of your LR to supplement soluble materials,
renew biota, biodiversity
Old Aquarium Being 'Brought Back To Life'.... Re-us LR
<Ohm; oh wait/ that's the old unit for resistance. What's up?>
I have a rather odd question, it will likely turn into a string of questions
over the next several weeks, but one has to start somewhere.
I have a 110 gal tank, with a canister filter and a protein skimmer. Ran great
as a FOWLR for several years.
Due to some incidents several years ago I would rather not go into, all the fish
eventually died (natural causes), but were never replaced. In essence, I have
been running the filter for the past 3 years w/ no fish.
The (live?) rock is still in the tank.
<Not so live; but highly likely useful still... as base rock... I'd bleach,
rinse (see the SOP on WWM) and use underneath some pounds of new LR>
I am now in a position to bring this thing back into operation. But, where do I
<Siting, cleaning, checking out all the gear...>
I assume with a major water change followed by a real good water chemistry test,
but do you think the microorganisms in/on the rock & filter would even still be
<Mmm; not much, no... but not to worry; can be restored via the above new LR>
How do you test that - run a test before the H2O change, or after, or both?
<Way after... all is cleaned, refilled>
Should I plan to add more rock?
Or get a few damsels to start the tank cycling, or both?
I also plan to switch to LED lighting - they have really come down in price over
the last several years.
<Yes; tis so>
<Keep your biers in a cool, dark place>
Strange sand like material from live rock
I have a severe Aiptasia problem that I am trying to get rid of (and I
also buying state lottery tickets, probably have a better chance
When I received several Berghia I ordered, I placed the majority in
my main tank, and put 4 in a 10 gallon tank with no
substrate to keep a
"breeding" group going. I have been careful to do a very strong
on small rock with Aiptasia growing on it before putting them in
tank for food for the Aiptasia to ensure there are either few or
copepods/amphipods to eat their eggs. I am seeing a great deal of
that comes off of these rocks over time, it is literally making a
on the bottom of the tank. Is this the norm for "live
<Can be.... this product is most often an amalgamation of living and not
matrix... though highly variable... Does "fall apart" as well as
"devolve" biologically; or should I write/state through biological
something boring holes in the rock that could be harmful to my
Thanks for all of the help that you have given all of us who have
<Welcome! Bob Fenner>
Re: Planning Question, LR additions, renewal, placement
I have a quick question. I'm re-reading "Reef Invertebrates" focusing on
the section on LR and the curing process. There is a paragraph that
explains that LR will get "old" over time and that augmentation or
rotation with fresh LR is desirable once or twice a year. How exactly is
<Just adding some new/fresh on top of the existing, or taking out some
of the old to make space for the new>
I'm planning my aquascaping so I'll be happy with the formation long-term
- am I supposed to take portions apart 6 months from now?!
<Ah no... in about a year and a half... then some new every six months
How would that work if the LR has some corals spread over it?
<The rock can be excised, broken, with the coral bases attached to part>
I'm also unclear what would be done with the "tired" LR? Is it discarded
or repopulated somehow?
<Best to move it to some other purpose... it just isn't "that" useful
after awhile... in terms of solubility, nor biota>
<Welcome. Bob Fenner>
Re: Planning Question 3/9/13
Thanks. Sound like that would be too difficult with the rock on top of
but more challenging for the larger base pieces.
<Just a small percentage (5-10) change/out. You'll find that this amount
has dissolved/disappeared (!)>
My tank is 6 ft long and one side will be difficult to reach since the
tank is built into the wall. Sounds difficult.
<... Stop saying no to yourself... Doing so closes ones mind to infinite
Re: Planning Question 3/10/13
Meant to say "wouldn't be too difficult for top pieces"
- I'll need to video the current in-wall set up to get your thoughts.
<Mmm, I spent/invested my life in the trade (ornamental aquatics). Our
businesses fabricated, installed and maintained hundreds of such
I guess it all depends how difficult it is to separate the rock.
If I end up with 150lbs of LR swapping out 15lbs wouldn't be too
daunting. I was thinking it'd need to do a much larger percentage
<Ah no; only a small percentage makes a huge difference. A few doctoral
I was planning to epoxy the LR together to make it strong and stable,
not sure if that will that make it difficult to separate down the road.
<Am a very negative fan of such epoxying... better to drill/peg and
stack if pieces are unstable... >
<And you, BobF>
Re: Planning Question... LR renewal, and now placement
Good to know re: epoxy. I want to have a lot of openings through
the aquascape so I was thinking I'd need something to bond the pieces
<Rarely necessary... again, if bommie like arrangements are desired...
see WWM re placing LR>
I've never done it though so maybe I'm wrong. What would you
suggest to use as a peg?
<PVC pipe of small diameter, acrylic doweling... are best>
Are zip ties good as well if they can be hidden?