Chelsea

It looks like the potassium permanganate treatment is already available in AA's pond forum 425nm. You can find uBroke's instructions here: http://albertaaquatica.com/index.php?showtopic=31776 Fisher has a post on that little gram scale that Lee Valley sells. http://albertaaquatica.com/index.php?showtopic=36849 It's a nice unit to scale dry meds and ferts. Fisher even mentions potassium permanganate in his post. Go figure. I hope everything works out well for your discus 425nm.

maybe potassium permanganate.