Discus Fish Feeding on Frozen Beefheart

150 gallon /560 liters. Eheim 2180, Fluval fx5, air pump but no Co2.6 Discus, 4 clown loaches, 4 corydoras sterbai, 2 corydoras panda, 28 cardinal tetra, 4 oto cats, 3 SAE. As for the you you like one and want to know its :)