Originally posted by luckies4me
My betta is in a 55 gallon with a number of other fish and they all get along just fine.
Yes, but that's a 55 gallon! There is plenty of room for the betta to swim around and have it's own area.

If all you have is a 2 gallon don't put in any other fish! Usually (depending on the fish) you want about 1 inch of fish for gallon of water, a betta and a bubble eye and an algea eater is way too much fish!

Tap water is fine to use, you just need to treat it. If your Betta has currently been getting spring water you will need to gradually change the water, or it could kill him. If these are new fish then treated tap water will be fine.