Spa Calcium Hardness Enhancer - 500g
Life Spa Calcium Hardness Enhancer increases the Calcium Hardness level in spa & hot tub water.
Water low in calcium can corrode equipment, etch concrete and grouted surfaces, and provide an environment favourable to algal growth.
The Calcium Hardness level of a spa and hot tub should always be maintained between 200 and 275 ppm for concreate and tiled surfaces and between 174 and 225 ppm for other surfaces.
Add 10 grams of Life Calcium Hardness Enhancer per 1000 litres of water to increase calcium hardness by 10 ppm.
Dissolve required amount of Calcium Hardness Enhancer into a bucket of water then add to the spa.