Filtrite Spa Hardness Increaser 500g

Filtrite Spa Hardness Increaser is an easy and effective way to increase the calcium hardness level in your spa or hot tub. Filtrite Hardness Increaser helps maintain the proper levels of calcium in your spa to the desired range of 175 - 350 ppm. If not balanced, the incorrect calcium harness levels will cause corrosive damage to spa equipment, fixtures, and tub surfaces. Application:  Dosage – 10 grams per 1000 Litres. The product should be pre-dissolved in a bucket of water. Add one-third of the required amount at a time for the best result.