Thread: Guides to keeping discus.
View Single Post
Old 09-03-2004, 02:46 PM   #40
FreEsTyLeR
Guest
 
Posts: n/a
Default
Quote:
Originally posted by Desolator
Not really, dirty water can cause it to appear also.
l had always tried to change water everytime but the black gains seem to stay, currently the fish is very active and eat alot
  Reply With Quote