PP (Potassium Permanganate) for Smaller Systems

How to dose in smaller systems with Potassium permanganate

Get one gallon jug of distilled water. Pour off a little of the water to make room for your potassium crystals in the jug.

Dip two level measuring teaspoons (@14 grams) of reagent grade or granular potassium permanganate.

Transfer the potassium permanganate granules into the gallon of water and cap it tightly. Hold the cap on, and agitate the jug until the potassium permanganate is thoroughly mixed.

You've got a 0.04% solution there; it's fairly weak. But don't put any fish in it or they will die flatly. The gallon jug you made contains a stock solution which will be used to dose the smaller pond or aquarium you want to medicate.

If your target dose is the recommended 4 PPM, please dose the 0.04% stock solution into the tanks; and follow the dosing charts below.

Use one full measuring cup of the liquid solution (240 ml) per sixty gallons of water.
One third of a measuring cup of the liquid solution (80 ml) per twenty gallons of water.
Three tablespoons of the liquid solution (45 ml) in ten gallons of water.

When the water turns from purple to amber, you can reverse the treatment with hydrogen peroxide. Put regular 3% USP Hydrogen peroxide into a regular water squirt bottle, and use one long squirt of 3% hydrogen peroxide, per one gallon of water.