I bought a 3" clown 2 days ago because I have a small snail prob. Last night I noticed my loach was tipping over. He was breathing very fast and all my other fish were acting normal. My water parameters are right on. Water has been constant numbers since I got my tank running. In my canister I have carbon and sponges. Do you think it was the media that I have that killed him. I want to know because I am planning on getting another but want to have the correct set up for him.