I just wanted to clear something up about dosing with potassium permangeate. I see too many people mentioning dosing by either color or by teaspoons, I know this may work for some people but PP can be lethal to fry if not done correctly. For adults I will dose at 2 mg/L for a 4 hour bath whereas fry are dosed with 1 mg/L. I will typically clean the tanks as best as I can before dosing because PP oxidise's any organics and may be neutralized too quickly if there is too many organics in the tank.

For example a 40 gallon tank converts to 151 liters, so I will add 0.151 grams of PP to the tank for fry or 0.302 grams for adults. PP can quickly be neutralized with seachem prime or hydrogen peroxide if problems start to arise.