I have 4 new longfin panda corys in my 55g community tank. The rest of the tank includes about a dozen guppies (they breed like crazy), couple SAEs, Blue eyed yellow longfin pleco, a couple balloon rams and a few nerite and mystery snails in the tank. I try to mix up their diet with spirulina flake, virbra bites, sera tabs, algae wafers, bug bites and freeze dried blood worms. My concern is that the food is not always getting down to the substrate, or that enough remains after the others have had their share of the sinking food, to satisfy the corys. I'm probably just being paranoid, but is there any I could be doing or feeding differently to ensure the pandas are getting enough?