Happy Hot Tubs - the best for your hot tub

Use this high quality PH Plus to increase the PH value of the water in your spa (7.2 to 7.6 is the optimum for spas).

If PH is too low, staining or corrosion may occur. PH Plus is also used to increase the Total Alkalinity of your Spa, Hot Tub or pool water. However if accurately needed to be increased, we sell Alkalinity Plus in our Shop.

Simply Test Your Hot Tub or Swimming Pool water and follow the instructions on the back of the tub to increase your PH correctly.

Good product for my water. Keeps the levels just right. ...

Rated by Cynthia Stogden-Sykes

Good product, does as described and good value. Arrived quickly as always. ...

Rated by Paul O'Mahony

Excellent product. Very fast delivery too. Thank you ...

Rated by Rutg Anderson

Great - easy to use and quickly delivered. Great speedy service - thanks. ...

Rated by Dave Owen