
Haviland Durachlor Calcium Hardness Increaser 25 lb C002711-PL25
Durachlor C002711-PL25 25 Lb. Calcium Hardness Increaser
Raises calcium hardness to prevent long-term damage to the pool and its equipment. Ideal range is 200-400 ppm.
- Active Ingredient: Calcium Chloride
- Granular Form: Quick-dissolving granules for easy application
- Usage: Add 1.2 pounds per 10,000 gallons of pool water to raise calcium hardness by 10 ppm
- Prevents Damage: Proper calcium levels prevent damage to pool surfaces and equipment, such as etching, pitting, and corrosion
- Application: Add the product directly to the pool water with the circulation system running. Brush any unsettled particles from the surface. Circulate for 2 hours and retest calcium hardness levels.
Features
- Contains: Calcium carbonate
- Granular product
- Eliminates a cause of pool components failing prematurely
Original: $57.99
-65%$57.99
$20.30Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Durachlor C002711-PL25 25 Lb. Calcium Hardness Increaser
Raises calcium hardness to prevent long-term damage to the pool and its equipment. Ideal range is 200-400 ppm.
- Active Ingredient: Calcium Chloride
- Granular Form: Quick-dissolving granules for easy application
- Usage: Add 1.2 pounds per 10,000 gallons of pool water to raise calcium hardness by 10 ppm
- Prevents Damage: Proper calcium levels prevent damage to pool surfaces and equipment, such as etching, pitting, and corrosion
- Application: Add the product directly to the pool water with the circulation system running. Brush any unsettled particles from the surface. Circulate for 2 hours and retest calcium hardness levels.
Features
- Contains: Calcium carbonate
- Granular product
- Eliminates a cause of pool components failing prematurely

















