wow that changed alot.... jeeze definitly looks bacterial. I heard Gulpers can be delicate so be careful.
I've heard that from serious experts too, albeit there are some keepers that swear by them. One doesn't know who to believe until they try in such a circumstance of conflicting info. Still, I tried myself many times too and I cannot say if it did what it was supposed to do or the fishes healed on their own.IMO, pimafix and melafix don't fix nothing.