I just did a thread search on "sick bettas" and one of the threads suggested using the small "betta bowl" and floating that in the tank to keep the temperature up. That sounds like a good idea BUT what about the filtration?? I'm going to head to Walmart for some medicine and aquarium salt - can anyone thing of anything else I might need to pick up? (by the way, thanks so much for all of the fast replies...i LOVE this forum!)