Hot Tub Chemicals

Large stock of Hot Tub chemicals available for next day delivery. We stock Clear & Safe, Relax and HTH Pool and Spa chemicals, including Chlorine, pH Increaser, pH Reducer, Clarifier and other spa chemicals
Relax pH Plus for Hot Tubs 1kg - World of Pools
  • Relax Spa pH Increaser 1kg
  • 1kg pH Plus - Soda Ash for increasing the pH of water
  • Rapid Dissolving and Fast acting
  • Next Working Day Delivery

PRODUCT INFO:
Relax Spa pH Plus (soda ash) in a 1kg container. pH increaser balances the pH in the water when your pH levels are too low. You should check the pH levels at least twice a week to ensure proper water balance control, more if the spa is heavily used

Relax Spa pH Plus should be used to increases the pH when it falls below 7.2.  If left unchanged a low pH can cause corrosion of parts and fittings.

Approx dose rate is 11g Relax Spa pH Plus per 1,000 litres of water but you should always read the instructions on the container for directions on use

Fast next working day delivery

Relax pH Plus for Hot Tubs 500g - World of Pools
  • Relax Spa pH Increaser 500g
  • Rapid Dissolving Granules
  • Handy Small container increasing the pH of Spa water
  • Next Working Day Delivery
HTH pH Plus Powder 5kg - pH Increaser

  • HTH pH Plus Powder pH Increaser For Swimming Pools
  • Rebranded From Fi Clor pH Increaser 
  • Fast Dissolving Soda Ash
  • For Use In Pools Or Hot Tub Spas
  • Powder Formula So No Residue