Rendezvous Spa Specialties Liquid Calcium Hardness Up raises calcium levels to help reduce foam and protect the spa from harmful corrosion from soft water or low calcium hardness.
- Easy-to-use liquid product
- Prevents corrosion of plumbing and equipment
1. Determine amount to be added by using a hardness test kit.
2. Pour proper amount into spa or hot tub with equipment turned on.
3. Run filter for 1-2 hours.
4. Water may be retested in 20 minutes.
Chlorine, bromine, ozone and mineral purification systems
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