I agree as well, small tanks are very easy to keep. I use 2 overdriven tubes and an aquaclear500 on my 7gal. The aquaclear in my mind is one of the best things you can hang on your small tank. Gives you more water volume (don't laugh it's another gallon
) and a place to put your heater and more rock ect.. And it also takes care of your water movement.
Clinton