I feed multiple times a day, but the general amount is the same. Going by frozen cube size, I would say I feed 4-6 cubes a day. For 3 tanks. This feeds my fox face , yellow tang, purple fire, clown goby, 4 clowns, royal gramma, mc coskers wrasse,6line wrasse, coral beauty, golden sleeper headed goby, alage blenny, yellow tail damsel, sunrise dotty back, 4 mandarins,3 scooter blennys, chromis, yellow watchman goby, red fire, and purple pseudo