How often should I check my hot tub water balance?

Test at least twice a week with a fresh strip. Test again after every refill and after heavy use such as a party or several long soaks.

What happens if my hot tub pH is too low?

Low pH is acidic, corrodes heaters, jets and seals, and irritates skin and eyes. Add ClearSpa pH Plus, run the pump for an hour and retest.

Can I add pH and alkalinity adjusters at the same time?

Always handle alkalinity first. Wait six hours with the pump running, then retest before adjusting pH separately.

Why does my hot tub need calcium hardness?

Soft UK tap water leaches calcium out of grout, heaters and seals. Aim for 150 to 250 ppm in a domestic spa.

How long should I wait before bathing after a balance dose?

Run the circulation pump for at least an hour and retest. Most balancers settle in 30 to 60 minutes.

Hot Tub Water Balancers

Hot tub water balancers hold pH, total alkalinity (TA) and calcium hardness inside the safe target window. Get them right and your sanitiser works, your shell stays clear of scale and your skin and eyes stay comfortable.

Products in this range

Calcium Hardness Increaser - Calcium Chloride Flakes: £10.79 to £79.80
pH & Alkalinity Reducer - Sodium Bisulphate: £5.89 to £38.80
pH plus - Sodium Carbonate: £6.52 to £76.80
Total Alkalinity Increaser Sodium Bicarbonate: £6.32 to £99.45

Which water balancer do you need?

Match your test strip reading to the right balancer and target range. Correct total alkalinity first, then pH, then calcium hardness.

Your reading	Product to use	Target range
pH above 7.6	pH & Alkalinity Reducer (sodium bisulphate)	pH 7.2 to 7.6
pH below 7.2	pH Plus (sodium carbonate)	pH 7.2 to 7.6
Total alkalinity below 80 ppm	Total Alkalinity Increaser (sodium bicarbonate)	80 to 120 ppm
Calcium hardness below 150 ppm	Calcium Hardness Increaser (calcium chloride flakes)	150 to 250 ppm