Clear Spa Cal is used to raise the calcium hardness in spa and hot tub water. Low calcium can lead to corrosion. Calcium hardness should be maintained between 150-200 ppm.
Directions for use:
Clear Spa Cal (650g)
1. Clear Spa Cal should be pre-dissolved in water before application
2. Add solution to spa water with pump filter running
3. Add 90 g of Clear Spa Cal per 1,000 L of water to raise hardness 25 ppm.
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