The Durachlor Hardness Increaser product is used to raise the total calcium hardness level in swimming pools. If proper calcium levels are maintained you can prevent the etching, pitting, and similar problems to the surfaces of plaster, masonary, and concrete pools.
- Raises calcium hardness levels
- Prevents surface corrosion
- Chlorine based
NEVER mix different product together in the same bottle or pail. Add this product directly to the water. Always apply product to water with the circulation system operating. Brush any undissolved particles from surfaces. Pool use may resume 15 minutes after product has fully dissolved into the pool.
- Add 1.2 pounds for every 10,000 gallons of water to increase calcium hardness 10 ppm. Broadcast product over the surface of the water. 1 lb = 2.75 Cups.
- Wait two hours and retest calcium hardness. Pool may be used immediately after application.
|Calcium Volume Increase||Gallons of Water (1 lb = 2.75 Cups)|
|10 ppm||0.6 lbs||1.2 lbs||3 lbs||6 lbs|
|25 ppm||1.5 lbs||3 lbs||7.5 lbs||15 lbs|
|50 ppm||3 lbs||6 lbs||15 lbs||30 lbs|
Calcium Di-Chloride 100%
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