I just got 4 ottocats who have cleaned up my aquarium nicely. The problem arose yesterday when they basically ran out of algae. To solve this I bought some algae waffers. I dropped 1 into my 24 gallon hex tank and unfortunatley the ottocats didnt notice it but my seven cherry barbs did and began to devour it. I moved it around the tank trying to get it in a spot where the ottocats would find it but to no avail. I tried feeding the other fish to keep them away from it but this was a temporary solution. My question is how do I feed my ottocats algae waffers w/o my other fish getting to it first?