Test the pH of your pool or spa water daily. The pH of your water
should be maintained between 7.2 and 7.6.
If your test kit reading indicates that the pH of your pool or spa
water is higher than 7.6, add pH Minus at a rate of 10g per 1000 litres
of water (e.g. if your pool contains 7000 litres of water add 70g of
pH Minus). One heaped teaspoon holds approximately 9g of pH Minus.
Pre-dissolve in a clean plastic bucket filled with water.
Ensure that circulation system is running when adding pH Minus.
Slowly pour solution into water immediately above pool or spa return
inlet.
Test pH daily and repeat dose until test reading indicates pH has
been reduced to 7.4.
Never add product when pool or spa is being used; do not allow pool
or spa to be used for 30 minutes after adding pH Minus.