SpaCare Calcium Up is used to raise the calcium hardness of the water to prevent corrosion in your whirlpool.
If the water has a value above 7.4, we recommend that you use SpaCare pH Down Granular - then the pH value drops. .
If the water has a value below 7.0, we recommend that you use SpaCare pH Up Granular - then the pH value rises.
SpaCare Alka Up raises the alkalinity of your spa and helps you keep the water in your spa in balance. The alkalinity should be 80-120 mg / l.
SpaCare Alka Down lowers the alkalinity of your spa and helps you keep the water in your spa in balance.