Your Pool needs to be maintained at a pH of between 7.2-7.6 and a Total Alkalinity of between 0-140ppm(parts per million). Operating within these parameters will prevent damage to your pool equipment and ensure that the sanitizer in your pool is effective.
PH Minus can be used to reduce either PH or Total Alkalinity.
Use a Test Kit to determine both the pH and Total Alkalinity of your Pool.
To Reduce pH
If the reading is above 7.6 add this product at a rate of 200gms per 25 cubic meters (14oz per 10,000 gallons) Pool water.
When adjusting the pH of your pool make sure that the pool circulation system is running.
Pre-dissolve the product in a clean plastic bucket of pool water and distribute evenly over the Pool water surface (dilute the product at a rate of 100gm per 5ltr bucket)
Re-test your water after 1 hour and repeat dose if required.
To Reduce Alkalinity
If the Total Alkalinity of your Pool is above 140ppm reduce Total Alkalinity 10ppm by adding as follows:
Pre-dissolve the product in a clean plastic bucket of Pool water. (Dilute the product at a rate of 500gm per 5ltr bucket) Turn off the Pool circulation pump.
Add 1 kilo of pH minus per 50 cubic meters (2 pounds per 10,000gal) in one spot at the deep end of your pool.
Leave the circulation pump off for one hour. Re-start circulation; do not use the pool for a minimum of 30 minutes.
Re-test after 24 hours and repeat if necessary.
