Yes it's cotton candy! :lol:
I know what they eat >> detritus, bacteria and microalgae. I suppose they poop their own itty bitty fecal pellets. What exactly happens to those?? I dunno, you've got me there.
What I assume happens with a copepod bloom is the pods are outgrowing their natural predators, bigger pods, for awhile. You'd expect that to fall back into balance.
But I can't even imagine the bioload with such huge fish like you have. My idea of a nice aquarium ecosystem may simply not apply to your situation.