It's crazy how much he can eat then he eats bugs all night long with the same ferouciousness. I have 2 cfls right over the water and the next day you MIGHT find a few wings or junebug shells but it is amazingly clean!!!
Their preference is in this order:
#1 bugs- they trigger a feeding response very strong even after a full belly
#2 sinking pellets- they eat them fast till they start getting full but I've never had to net out the extras.
#3 floating cyclid pellets- each fish will eat a few then becomes disinterested and I have to net out the extras.