FAQs on Azooxanthellate Stinging-Celled
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Symbiotic Reef Invertebrates to Captive
Oysters in the Sump (Not the answer here) --
I thank you for a wonderful website and excellent moderators.
<<A collective effort'¦we are pleased to
I tried but was unable to find any info on stocking oysters in the
<<Not practical, really -- extremely difficult to sustain for any
length of time>>
I currently run a 50 gallon tank with a 15 gallon sump. It is stocked
with Carnation Corals
<<Mmm -- about as difficult as the Oysters. The challenge here
with both types of animal is the feeding of them -
both are very likely to starve to death. Please do read here
(http://www.wetwebmedia.com/dendrofaqs.htm) and here
I picked up under the docks in Kochi, Japan. I have been feeding them
with PhytoPlan and ZoPlan,
<<Here's a link to a 'recipe' for azooxanthellate
with an accepted supply of food(s), providing this in sufficient
quantity without overwhelming your system is a challenge. It can be
done, but takes a special dedication and attention to system setup and
but they have shrunk to about half their size in 6 months.
I have read that feeding them oyster eggs would be good, but frozen
oyster eggs are not available locally.
<<Can be found on the Net
There's an oyster farm about 10 miles from my house so I picked up
a few and put them in my sump.
<<Hmm'¦perhaps you could also check to see if the farm
harvests/will provide eggs for purchase>>
Water temp is 24.5 C, pH 8.0, dKH 11 and Ca 410. Filtration is a
trickle filter with a coil denitrator, Beckett skimmer and ozone.
<<Do search the net re Azooxanthellate systems for tips on
configuration/lighting/water flow/husbandry needs et al. One in
particular that might be worth researching is the 500L
non-photosynthetic reef by Dutch aquarist Pieter van
Would 5 or 6 oysters spawning overload my biofilter?
<<I think the bigger question is 'will they
spawn?''¦and if they should, 'would this be
sufficient' to meet the nutritional requirements of the Carnation
Corals? In both instances, I think the answer is 'not likely at
all.' Such a 'self-sustained' non-photosynthetic system as
you describe is not practical in my opinion, especially one as small as
yours. It would take a much larger number of Oysters kept in peak
condition and spawning on a continual basis -- something at least, if
not more so, challenging than the Carnation Corals. Better to expend
your time and energy on researching alternate feeding methods (e.g. --
producing your own 'live' Phytoplankton and Rotifers for a
'continuous-drip' feeding system, etc.) for the carnation
Corals, as well as system and husbandry requirements'¦and to
make sure you have the time, resources, and dedication to the keeping
of these beautiful but 'extremely challenging'
James Miller - Okayama, Japan
<<And to you in kind... Eric Russell - Columbia, South