[Coral-List] [SPAM] coral feeding questions

delbeek at waquarium.org delbeek at waquarium.org
Fri Jun 2 20:31:44 EDT 2006

Zac Forsman <zforsman2001 at yahoo.com.au> said:

> Great comments Charles!
>   -I have one question though: the tanks at the
> Waikiki Aquarium all have live rock/sand/gravel. 
> Might these serve as refugia for populations of all
> kinds of micro organisms that the corals could feed
> on?  Increased nutrients might be used by the coral..
> but they could also cause a bottom up trophic cascade
> that benefit the coral.  Might also increase the
> detritus or 'marine snow' in the tank.

That is entirely possible but then given the surface area of coral to volume
of the systems, that is a pretty dense accumulation of mouths in a small space
.. I doubt there could be enough plankton generated ... put that is just a
gut feeling based on no data at all. :-)

Also, I only claimed that there was no plankton in the incoming water and that
we don't ADD any food to the tank in an attempt to feed the corals.


J. Charles Delbeek
Aquarium Biologist III
Waikiki Aquarium
2777 Kalakaua Ave.
Honolulu, HI, 96815


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