Maintaining the correct pH will protect the pumps and heater from corrosion and help to avoid problems caused by limescale.

Symptoms of high pH include scale on surfaces and cloudy water, poor sanitizer function and the need for frequent filter cleaning. If the pH of your water is above the level recommended for your sanitizer use pH Reducer to reduce it.

Dose to reduce the pH : 11g per 1000 litres of spa water.

Pre-dissolve the product in a clean plastic container at a maximum rate of 11g per litre of warm water from the hot tub.  Agitate well to ensure that the product is fully dissolved and add the solution to the spas with the pumps running to aid distribution.

After a minimum of 30 minutes re-check the pH level and repeat if necessary until the required pH is reached.  A number of treatments may be necessary.

To reduce the TA : Use the amounts shown in the following table.

NB If you are unable to maintain an appropriate pH level in your tub the most likely cause is that the the Total Alkalinity is too low.  Always correct the Total Alkalinity balance before you attempt to balance the pH.