Okay guys, so I've set up my tank and everything, but the fish are still stressed and aren't really eating that much! They do eat some, but only when I'm not around, so I usually just leave the food in there and they eventually grab it. Here's the problem though, or, atleast I think it is? I was looking at the tank and noticed this cotton like material inside the tank, and the first thing I think is, "why is there even cotton in my tank?!" But then I realized it was the pellets! After a few days of sitting, they decomposed into this cotton like substance and kind of laid in the gravel. It was fairly easy to get most of it out, but some pieces just went floating around. The bag DID say to avoid leaving the food in there to avoid health problems, and now I'm wishing I listened. Is this an issue? Will this harm the little guys? Thanks for your input everyone!