Any online orders made throughout the festive period will not be couriered until Monday 5th January 2026.
Any online orders made throughout the festive period will not be couriered until Monday 5th January 2026.
€15.00
AquaSparkle Hardness Plus is a granular calcium hardness increaser designed to correct low calcium levels in hot tub water. When calcium hardness is too low, water can become corrosive, potentially damaging hot tub surfaces, heaters, and internal components over time.
Hardness Plus works quickly to raise calcium hardness into the recommended range, helping stabilise water balance and protect your hot tub and equipment. It is ideal for use when test results show calcium hardness has dropped below the recommended minimum level.
Maintaining correct calcium hardness supports more comfortable bathing conditions and helps prolong the life of your hot tub.
Available for delivery across Ireland.
