PH Up Plus+ 1Kg Hot Tub Swimming Pool Spa Tubs Spas Soda Ash Increaser
PH plus is suitable for use in swimming pools, spas or hot tubs. Leave for 24 hours then re-test to ensure pH level is between 7.2 - 7.6. Spa and Hot Tub. pH plus is a powdered. sanitisers starts to decrease.