How to Reduce Calcium Water Hardness in a Pool

Measure calcium hardness -- a measurement of dissolved minerals in your water -- with a testing strips or water testing kit. Many pool chemicals contain calcium, which gets deposited into your water and increases calcium hardness levels over time. Your local water supply, potentially high in calcium, has the ability to affect your pool. This will usually prove the case after you fill up your pool for the first time. High calcium hardness levels, if not addressed, can cause several problems.

Testing kit

Instructions

- 1
  Test the water using a testing kit or testing strips. Calcium levels should remain somewhere between 200 parts per million (ppm) and 400 ppm.
- 2
  Turn the filter off and turn the multi-port valve located on your filter to the "Drain" setting. Allow the water to drain to below the skimmer. Turn the multi-port valve back to "Filter." Restart the filter.
- 3
  Drop a garden hose into the pool and fill it from your home's water supply. Wrap the hose around the pool ladder to prevent it from slipping. Turn off the water and remove the hose when the water reaches the half-way to two-thirds mark of the skimmer's vertical height.
- 4
  Retest the water after running your filter for eight hours. The calcium hardness levels will be reduced.

How to Wire a P1353ME

Polaris Caretaker Installation Instructions

Swimming Pools & Spas