If you can get mardel products I would recomend them. The symtoms you discribe
could be secondary to the white spot or another disease altogether. Identfying
the probelm from a distance is problematic at best.

Moon
remove nospam from e-mail to send to me, I grow trees in aquariums like bonsai.
I breed dwarf crayfish, great for planted community tanks. If you can get me a
shovelnose sturgeon fingerling (Scaphirhynchus platorynchus) no wild caught
please, contact me