Hi All, I believe my fish have fin fungus, last night only one of my jack Dempsey had it and now 2 other fish have it.
It seems to be caused by water change and is not a disease, what can i do to get rid of it ?
I use purigen in my tank, would i have to remove the purigen before doing anything ?
I have supplied a photo for reference.


It seems to be caused by water change and is not a disease, what can i do to get rid of it ?
I use purigen in my tank, would i have to remove the purigen before doing anything ?
I have supplied a photo for reference.

