21 bettas! cool. I'm glad to see you have a cycled 2.5, because I've read some places it would be hard to cycle even a 5 gal. If I have any questions, I'll look you up. I'm only planning on setting up the tank once my bugs live out their life - otherwise, too many pets at once for me, lol. Do you recommend any betta communities I can lurk in for the meantime?