We do not recommend the use of borehole water in swimming pools (refilling or topping up) as in most cases, the water contains dissolved metals such as iron which can cause the water to colour or the lining to stain. However, if borehole water is the only source of water, the following procedure should be followed:

Procedure:

• Tie a cloth over the garden hose. Put the garden hose into the deep end of the pool and switch on.
• Where there is a depth of approximately 1 metre of water in the deep end, dilute 1 litre of HTH® Metal Remover in 10 litres of water and distribute over the surface of the water. This will reduce the possibility of staining.
• Continue adding water until the water level has reached the midway mark of the entrance of the weir
• Switch the pump to Bypass/Circulate/Recirculate and circulate the water for 8 hours.
• Put the pump back onto Filter position
• Check and adjust the pH to 7.2 – 7.6.
• In the evening, with the motor running, add 2 cups of HTH® Classic for every 10 000 litres of pool water. Follow label instructions.
• Filter continuously for 24 hours.
• After the first 12 hours, test the pH and recorrect if necessary to between 7.2 – 7.6.
• At this stage, the automatic pool cleaner may be connected. (If this is a new marbelite pool, wait the recommended 28 days before connecting the automatic pool cleaner).
• Continue filtering until the 24 hour cycle is completed
• Check the TA and adjust to between 80 – 120ppm.
• Freshly filled pools will have a low calcium hardness level. This must be increased to prevent premature deterioration of the pool shell and equipment. Maintain calcium hardness between 250 – 1000ppm by scattering calcium chloride over the pool water while the filter is running.
• Continue with normal filtration and chlorination.

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.