Small, centerpiece fish in CO2, low pH tank
I'm looking to add some color to my tank (20 long). So far, all I have 5 otos and 3 honeycombs, which are beautiful, just not vibrant and bright. A GBR won't do since I'm also getting a zebra oto and 10 Corydoras habrosus in the mail. My first choices would be Gudgeons, but can they handle CO2, low pH (6.0 w/ CO2), and low KH (1-2)? My second choice would be Dario dario, but they're tiny and I'd worry I'd never see them. Unless you think there's a good apisto or if I can fit a school of nanos like CPDs.
My Golden Rule of planted tanks: WWTAD-
"What would Takashi Amano do?"
RAOK Club #69