About 2 months ago the state fair came through, my son won 3 goldfish. We stopped on the way home, bought all the stuff we needed (3 gallon tank, rocks, decorations, etc) and of course they were dead by the next day. So I did some research, found this place, read a lot and ended up with a betta. I got a new tank and she was in a 5 gallon tank with a hillstream loach. Upgraded the tank to a 10 gallon and added an ADF. ADF, betta and loach are all happy, well, the loach is just there. She (he?) tends to just stick by the filter and in hindsight, I wouldn't have gotten it (bad petco advice). The 10 gallon tank came with the bio wheel filter but I swapped it out for the Whisper that came with the 5 gallon since the betta seemed to hate the flow.
Can I add anything else? The loach is rarely visible without serious looking, the ADF is entertaining as is the betta but it seems so empty in there. She is not aggressive or timid, seems pretty laid back to me actually. I like the tetras but I'm not sure a school wouldn't overload the tank.