I have been feeding once a day a cube of alge and one cube of the formula for meat eaters not sure whats in it but they love it.I wonder though if it's enough, I have great filtration but as always the more I feed the more nitates i have, which means more water changes. fish are clown trigger humu humu, passer angel, dog face puffer, powder blue tang, two left over damsles, one clown,:happyfish :happyfish :happyfish :happyfish :happyfish :happyfish :happyfish :happyfish