Slight green/brown tint to the water OR
When chlorine is added to the water, the water turns a brown/green colour
Dissolved metals in the water / Low pH / Low Total Alkalinity / Use of borehole water
Note: Metal in solution can cause staining when it comes out of solution!
- Disconnect the automatic pool cleaner.
- With the Multiport Valve on the Bypass/Circulate/Re-circulate position, distribute the contents of a bottle of HTH® Metal Remover evenly throughout the pool. HTH® Metal Remover reduces the risk of further staining but is unlikely to remove existing stains. (Please ignore this step if it has been recommended in an above treatment.)
- Circulate the water for 8 hours.
- Turn the pump back to the filter position and check the pH level.
- In the evening, shock treat the pool, by adding 6 cups of HTH® Granular Chlorine or 2 sachets HTH® Shock It.
- Run the filter continuously for the next 24 - 48 hours or until the water clears.
- After the first 12 hours, reconnect the automatic pool cleaner and check the pH and adjust if necessary.
- If there is no marked improvement after 48 hours, add another 3 cups of HTH® Granular Chlorine or one sachet of HTH® Shock It and filter for a further 24 hours.
- If a tinge of colour remains or if there is brown sediment on the floor, add HTH® Sparkle It per label instructions to remove the sediment/colour.
- Raising pH to above 8.4 and keeping it there for 24 hours while filtering continuously will sometimes remove iron but HTH® Metal Remover must first be added.
- Correct Total Alkalinity to 80 – 120
Only adjust the Total Alkalinity once the pool has turned from a green colour to a bluish colour. Thereafter, continue with normal filtration and chlorination programme.
HTH® Metal Remover
HTH® Alkalinity Up
HTH® Granular Chlorine
HTH® Shock It
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.