Hard H2O is a calcium booster which will raise water hardness level while
preventing foaming and equipment corrosion. Depending on which part of the
country you live in and what your hardness level is naturally, varying amounts
will be needed to balance your calcium levels. Balancing calcium levels
stabilizes all other chemicals and will help prevent corrosion.
Application: As Needed and at fresh refill:
Determine amount of product to
be added. The ideal hardness level is 150-400 ppm.
Turn jets ON to circulate spa
Pour required amount into the
Run filter for 1 to 2 hours.
Retest water to ensure proper
Repeat steps 1-5 until proper
level is obtained.
Test Strips to determine hardness level. Water low in calcium will
Chlorine, bromine and biguanide sanitizers.