PH Increaser is a granular product used to adjust water pH upwards. Compatible with all spa sanitisers.PH Increaser£10.00PriceSize*SelectQuantity*Add to CartBuy NowPRODUCT INFOThe ideal pH Range: 7.2 – 7.6 Test the pH of your spa water and if it is below 7.2, use pH Increaser to raise it.SHIPPING INFOItems will be sent within 1-3 working days via a 1st Class Delivery Service. Orders over £75 will receive FREE DELIVERY.