1.5kg Spa pH Minus (Dry Acid)
pH Minus Information
pH Minus (also known as pH Reducer, Dry Acid and Sodium Bisulphate) is used for decreasing the pH of your spa water.
Add at a rate of 11g per 1,000 litres (220 gallons) of water.
Please read instructions on the products before use.
For more information on chemicals and water treatment, there are documents and downloads available in our Resources section.