So I just finished fishless cycling my tank, and after all was said and done, I added 2 african cichlids and a pleco. Waited a day and added 2 more cichlids. Cichlids are fine and happy but mysteriously the pleco is dead..
It's a 30 gal Hex, with a Rena xP2.
The readings are:
pH: 7.4
ammo: 0...