Hey all, my lace catfish Spot has some ragged looking fins and has developed what appears to be patches of missing skin on her flanks. They started as white spots, then gradually became red and appear to be exposed tissue. I ran a round of Kanamycin in the tank to help prevent a secondary infection and removed a cichlid that was picking at her sores. I also removed a Balao-class submarine decoration from the tank after suspecting it of hitting her with a torpedo.
All kidding aside, I have noticed that the pH in the water was waaaay low, as in below scale. I don't know what the pH is, but it is under 6.0. The question I have is this: could overly acidic water cause skin/fin deterioration? The cichlid I removed from this tank doesn't have any symptoms at all but I figure his scales would be more resilient than the lace cat's smooth skin.