I feed them frozen brine shrimp, spriluna shrimp,mysis shrimp frozen and freeze dried blood worms. 4 discus including him. the biggest discus is about 2" A clown loach about 1.5 to 2" 10 glowlight tetras and 2 ottos. the temp. is around 82 to 84. nitrate is about 15 and nitrite is 0 the hardness is 300