How often should I check my hot tub water balance?

Use a fresh strip no fewer than twice weekly. Repeat checks following each refill and heavy bathing, including parties or several extended sessions.

What happens if my hot tub pH is too low?

Acidic low-pH water can irritate eyes and skin while corroding seals, jets and heaters. Dose Deep Blue Spas pH Plus, circulate for one hour, then test again.

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

Correct alkalinity before pH. Keep circulation running for six hours, check the water again and only then make the separate pH adjustment.

Why does my hot tub need calcium hardness?

Calcium can be drawn from seals, heaters and grout by soft UK tap water. A domestic spa target is 150 to 250 ppm.

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

Circulate for one hour or longer before checking again. Most balancing treatments settle within 30 to 60 minutes.

Deep Blue Spas Hot Tub Water Balancers

Three readings are managed by spa balancers: pH, total alkalinity (TA) and calcium hardness. Keeping each within target supports sanitiser performance, user comfort and a shell without scale.

Products in this range

Deep Blue Spas Calcium Hardness Increaser - Calcium Chloride Flakes
Deep Blue Spas pH & Alkalinity Reducer - Sodium Bisulphate
Deep Blue Spas pH plus - Sodium Carbonate
Deep Blue Spas Total Alkalinity Increaser Sodium Bicarbonate