25 Lb. Water Hardness Plus
Prevents Corrosion
Fast-Dissolving
Protects Equipment
High Purity
This high-purity Calcium Chloride formula is used to raise Calcium Hardness levels in pool water that is too "soft." Proper hardness levels are essential to prevent the water from becoming aggressive and drawing minerals out of your pool surfaces and equipment.
Why You'll Love It
- Protects Surfaces — Helps prevent the etching of plaster, tile grout, and concrete finishes caused by low calcium levels.
- Preserves Equipment — Minimizes the risk of metal corrosion in your heater, pump, and ladder rails by balancing the Langelier Saturation Index.
- Stops Liner Wrinkling — Maintains proper water tension to help prevent certain types of vinyl liner puckering or stretching issues.
- Easy Application — The granular flakes dissolve quickly in the water, making it easy to bring your levels into the ideal 200-400 ppm range.
Best For
- New pool fill-ups from soft water sources
- Plaster, gunite, and pebble-finish pools
- Vinyl liner pools with low mineral content
- Correcting "aggressive" water chemistry
How to Use
- Test your water to determine the current Calcium Hardness level.
- Calculate the dosage needed based on the label instructions for your pool volume.
- With the pump running, broadcast the product directly into the deep end.
- Allow the water to circulate for at least 4 to 6 hours before re-testing.
Pro Tip
Avoid adding this product at the same time as pH increaser or Alkalinity Up, as it can cause the water to cloud; wait at least 4 hours between treatments.
Always follow label directions. Test and balance water chemistry before and after treatment. Keep chemicals stored sealed, cool, and dry.
