Hello Folks. I have a few concerns about keeping discus. My tank is a
liveplant 55 gal pH 6.8 to 7.0 CO2 injection. KH about 3 to 4, very low GH
with a Marineland 350 BioWheel and a Rena/Filstar XP 2. Temp at 85F. 4
Cardinals, 11 Black Neon's, 3 Juli Catfish, 5 Oto catfish 1 pelco and 1...