FYI - I just read a post on a tropical fish mailing list I subscribe to that Potassium Permanganate can be found at Sears by the water softeners. What it's used for, I don't know. But I'm planning on checking it out next time I go there.<br><br>BTW, it was one of several recommendations on how to treat a real severe fungal infection on a fish.<br><br>Willie Vannerson<br>McHenry, IL