Increase or Decrease pH
The pH level indicates how acidic or alkaline the water is at any given time. A pH level of 7 means that water is neutral; above 7 means the water is alkaline, while below 7 indicates acidity. Aim for a pH level of between 7.2. and 7.6.
All dosages are based on an average pool with a capacity of 50 000 litres. Adjust according to your pool size, regional variations and weather conditions
POSSIBLE CAUSES OF LOW pH:
- Insufficient chlorine
- Excess addition of acid to swimming pool water
- Use of products containing cyanuric acid
- Bad weather conditions
How to increase pH
DIRECTIONS FOR USE:
NB: To raise pH in fibreglass pools, only HTH® Alkalinity Up should be used.
Precautions: In the case of a vinyl or coloured lining, add HTH® Alkalinity Up directly into the weir to prevent possible bleaching.
01 | To prevent possible staining from metals that may be present in your water, add 1 bottle of HTH® Metal Remover – follow label directions.
02 | Filter for 3 – 4 hours.
03 | Test pH and readjust if necessary.
02 | Filter for 3 – 4 hours.
03 | Test pH and readjust if necessary.
Recommended products:
How to decrease pH
DIRECTIONS FOR USE:
NB: Never add more than 250g of HTH® Dry Acid/ HTH® Easy Acid at any one time
Precautions: In the case of a vinyl or colored lining, add HTH® Dry Acid/HTH® Easy Acid directly into the weir.
01 | Test pH levels. pH should be maintained between 7.2 – 7.6 to ensure effective sanitation, avoid eye and skin irritation and prevent damage to pool linings and equipment.
02 | With the filter running, add 250g (1/2 cap) of HTH® Dry Acid around the sides of the pool.
NB: In the case of a vinyl or coloured pool lining, add HTH® Easy Acid / HTH® Dry Acid directly into the weir.
03 | Filter for 3 – 4 hours.
04 | Test pH and readjust if necessary.
02 | With the filter running, add 250g (1/2 cap) of HTH® Dry Acid around the sides of the pool.
NB: In the case of a vinyl or coloured pool lining, add HTH® Easy Acid / HTH® Dry Acid directly into the weir.
03 | Filter for 3 – 4 hours.
04 | Test pH and readjust if necessary.
