Relax pH Minus / pH - granules are a dry acid balancer, used to reduce the pH of your hot tub / spa / swimming pool water.
Fast and easy to use granules. Dosage instructions included.
Why do I need to use a pH Reducer?
Use pH Minus for reducing the pH level in your hot tub, spa or swimming pool water. A high pH level in hot tub, spa or swimming pool water can cause limescale build up, which can damage working parts including pumps, heaters and seals. To prevent this issue, use pH Minus.
How do I know when pH needs to be reduced?
Test the water using pH test strips, if your pH is above 7.6, use pH Minus to bring the pH to between 7.2 and 7.6 on your test kit/strips.
Confused about your hot tub water chemistry? Our guides answer the most Frequently Asked Questions!
Read our how-to guide on balancing your hot tub / spa / swimming pool water pH levels
How do I use pH Minus?
A genuine Relax branded product.