Leisure Time Calcium Booster

Price: $7.99

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Calcium Booster

Raises water hardness level while preventing foaming and equipment corrosion. 


  • Increases water hardness
  • Helps prevent corrosion

By maintaining proper hardness levels, the life of the spa will be extended.


As Needed:

One ounce raises the calcium hardness 7 ppm in 500 gallons of water.
1. Determine amount of product to be added. The ideal hardness level is 150-400 ppm.
2. Turn jets ON to circulate spa water.
3. Pour required amount into the water.
4. Run filter for 1 to 2 hours.
5. Retest water to ensure proper level.
6. Repeat steps 1-5 until proper level is obtained.

Use Leisure Time Spa & Hot Tub Test Strips to determine hardness level. Water low in calcium will etch plaster and corrode equipment.

Compatible With:
Chlorine, bromine, ozone and biguanide sanitizers.

  • Shipping Weight: 2lbs
  • Manufactured by: Leisure Time