containers, without heat. One got sick. I put him in a 3 gal. #2 plastic continuer and he did improve some with heater. he is even staying near the heater! The following day I put two others in the larger plastic containers. One of them has become so sick he is often laying sideways on the bottom! The fourth one was already in a plastic contain, just to a larger one with heat now. Anyone know what is going on?