I just upgraded my betta from a 2.5 gallon tank to a 7 gallon. I was planning on getting an African dwarf frog and a mystery snail to go in the tank too. Would this be fine? Or if I plan on getting fish instead, what would be the best option? I kinda figure it would have to be small fish. The tank is heated and filtered. I do have an air stone but I have it off until I get a better one since it is to strong for my betta.