That's a good idea! I don't have any room for a quarantine tank and I've had these guys for about a year already. They ate the old pellets when I had the bare bottom but they were very unenthusiastic about it. I really hated the bare bottom. The water was always cloudy and the frogs constantly kicked stuff up. I'm thinking about sand. Not positive but thinking about it.
I'm going to try glass worms probably next... This is getting really annoying! I just wanted to try something else besides bloodworms.