Ok I'm really at a loss here.. w/o taking up too much space, a brief overview:
1. 125G tank, 81deg, ph=8.2, NH3=0, N02=0, N03=20, gH and Kh are acceptable range (didn't test today) weekly 25% water changes.
2. a little over a month ago, one of my 4" male c.moorii had some kind of injury...