29 gallons (US)
At the moment, 6 neon tetras, 1 praecox, 2 cories (one is on her way out), 1 or 2 khuli's (can't find one), 6 guppies.
Water stats will have to come later when I can grab the numbers since I'm on my way out the door, but I know pH was 6.8-7.0 or 7.2, hardness was at the top of...