Who eats ricordea and zoo's

[Diana]

Your right that is a lot of fish for a 90 gallon... I have 1 yellow tang, 1 hippo tang, 1 bellus angel, 1 brazillian gramma, 2 clowns, 2 bengaii, 1 anthias, and 1 mandarian goby, and I think my tank is already way overstocked. Not saying that your fish are picking on your corals, but having such a high bioload and thus a lot of organic waste cannot be good for the corals... I am even having some problems with one of my zoo colonies closing up and dying, while zoos near it (but not next to it) are fine.

I'm thinking some sort of hitchhiker crab is the culprit...