Castle Hot Tubs pH+ is used to increase the pH of Swimming Pool or Spa Water. Keeping your PH between 7.2 and 7.6 is the best way to maintain great water quality that is safe for bathers and wont damage your hot tub or its components
If your pH is too low, staining or corrosion may occur.
Postage
We make every attempt to despatch goods as soon as payment is received.
Goods ordered before 1pm will be sent out on the same day.
Our couriers deliver from MON-FRI anything ordered at weekends or bank holidays will be posted on the following working day.
If you require delivery to the Scottish Highlands & Islands, Isle of Man, Scilly Isles, Channel Islands,
Northern Ireland or outside of the UK mainland please contact us for a postal quote before making your purchase.
Thank you.