Today I went to Wal-Mart and bought a few things:
-A 5 gallon tank
-A thermometer
-Stones
-Plants
I actually didn't read your post until I got back, but tomorrow I will DEFINETLY be getting a heater. I did what you suggested (using hot water), and his water is around 81 degrees. I have began feeding him again...unfortunetly pellets are all I currently have..but as soon as I dropped them in his bowl, he immediately swam to the top, ate the first one, and then sank back down, and a few minutes later, he ate the second.
I don't think I should move him to the new tank until he gets better because that would mean making him swim twice the distance to get oxygen.
Anyway, we set the tank up today, but there's a problem: Current.
As you will be able to see in the following two pictures, the water that is coming out of the filter splashes on top of the tank's water and makes huge current all accross the tank. There's a fill line on the tank, so we only filled it up to there, but I remember reading somewhere that bettas don't like current...am I correct?
If Spuddy "leaves us", I'm planning on buying some more fish...maybe different kinds of fish, or maybe just another betta again, or something. I'd call him Spuddy the 2nd.
Anyway, here are the two pictures:
http/a.1asphost.com/aDcOoL/NewTank.png
http/a.1asphost.com/aDcOoL/Filter.png
Thanks for all your help!