It will discolour water for up to 7 days, and can be used down to 10°C (50°F).
At higher temperatures Potassium Permanganate removes oxygen from pond water, it is advisable to keep an air stone running and add more air if possible.
KUSURI Hydrogen peroxide 6% can be used to increase the oxygen levels in pond water and also remove the discolouration from the pond water after a course of KUSURI Potassium Permanganate has oxidised from pink to brown.
It is NOT recommended to use Potassium Permanganate with salt.
Dosage: 6.8g per 1000 gallons (4546 Litres) of pond water. DO NOT OVERDOSE. Over dosing can cause fish fatalities
Do not use below 10°C (50°F).