Quickly lowers hardness levels. Ideal calcium hardness range is 200-400 ppm.
Doheny's Calcium Hardness Reducer, 1 Quart

In stock
- Brand
- Doheny's
- MPN
- 12000119
- SKU
- 4880
Item 4880P
Instant Purchase Confirmation
- Made in the USA!
- Contains phosphonic acid derivatives.
- Add when hardness levels rise above 400 ppm to prevent staining and corrosion.
- Works quickly. Prevents damage to equipment.
- Dosage: 1 qt per 10,000 gal.
Product Description
Balance Your pH Levels With Ease - Balancing your pool's pH levels has never been easier with Doheny's pH Plus, pH Minus, and Alkalinity Up! Keep your pH level between 7.2 and 7.6 ppm. Staying within that range will keep you and your pool equipment safe. On top of that, having a balanced pool will prevent scaling or cloudy water. Remember, always adjust your Alkalinity levels before adjusting your pH levels. Alkalinity acts as a buffer for your pH levels. If your Alkalinity levels are out of balance, you will never be able to get your pH properly adjusted because it will never “lock in”. By making sure that your Alkalinity level is at 80-120 PPM first, then balancing your pH, it will be more stable and less susceptible to “pH drift”. pH drift occurs when your Alkalinity is out of balance and it causes your pH level to fluctuate wildly depending on bather loads and rain.
Stabilize Your Calcium Hardness Levels - Prevent stains and corrosion with Doheny's Calcium Plus and Calcium Reducer! Our strong solutions are built to act fast and work hard so you don't have to. Don't allow your Calcium Hardness levels to fall below 200 ppm. For plaster pools, maintain a range of 225-300 ppm and for vinyl, fiberglass, and non-masonry pools maintain a range of 175-225 ppm. If you are using well water in your swimming pool, a properly balanced calcium hardness level is a must!
Increase Your Chlorine Effectiveness - Make your chlorine work more efficiently with Doheny's Stabilizer! Using our stabilizer protects your chlorine from the sun's UV rays, making your chlorine last much longer. Chlorine levels too high? Not a problem! Use Doheny's Chlorine Neutralizer to quickly lower your chlorine level to a safe range.
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Doheny's Calcium Hardness Reducer, 1 Quart | Doheny's Calcium Hardness Reducer, 1 Quart | Doheny's pH Plus, 10 lb | Doheny's pH Minus, 10 lb | Doheny's Calcium Hardness Reducer, 4 Quarts | Doheny's Calcium Hardness Reducer, 12 Quarts | Doheny's pH Plus, 50 lb | Doheny's pH Minus, 50 lb Bag | Doheny's Calcium Hardness Reducer, 1 Quart | Doheny's Calcium Hardness Reducer, 4 Quarts | |
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Doheny's
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Doheny's
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Description |
Quickly lowers hardness levels. Ideal calcium hardness range is 200-400 ppm. |
Quickly lowers hardness levels. Ideal calcium hardness range is 200-400 ppm. |
SAVE WHEN YOU BUY IN BULK Perfect pool water starts with the proper pH levels. pH Plus raises pH levels to prevent corrosion and eye/skin irritation. Protects expensive equipment. Contains sodium carbonate soda ash. Dosage: 1 lb per 10,000 gallons water if only below 6.6. |
Lowers pH levels to prevent scaling and cloudy water - Ideal range 7.2 to 7.8. Keep on hand to treat elevated pH levels that can cause eye/skin irritation, cloudy water and scaling that can damage pool surfaces and equipment. Made in the USA! |
Quickly lowers hardness levels. Ideal calcium hardness range is 200-400 ppm. |
Quickly lowers hardness levels. Ideal calcium hardness range is 200-400 ppm. |
SAVE WHEN YOU BUY IN BULK Perfect pool water starts with the proper pH levels. pH Plus raises pH levels to prevent corrosion and eye/skin irritation. Protects expensive equipment. Contains sodium carbonate soda ash. Dosage: 1 lb per 10,000 gallons water if only below 6.6. |
Lowers pH levels to prevent scaling and cloudy water - Ideal range 7.2 to 7.8. Keep on hand to treat elevated pH levels that can cause eye/skin irritation, cloudy water and scaling that can damage pool surfaces and equipment. Made in the USA! |
Quickly lowers hardness levels. Ideal calcium hardness range is 200-400 ppm. |
Quickly lowers hardness levels. Ideal calcium hardness range is 200-400 ppm. |
Specifications
- Use: Increase the water pH to 7.8-8.2 and maintain for the first three days after treatment. Reduce the pH to 7.4-7.6 after this period, or after the calcium reduction has occurred. Add the recommended dosage of Calcium Reducer by pouring around the perimeter of pool or spa. Maintain water circulation for at least 12 hours each day in pools or 1 hour per day in spas during initial treatment period. After three weeks, have the calcium hardness tested.
- Initial treatment dosage for pools: 1 quart per 10,000 gallons of water
- Initial treatment dosage for spas: 1 ounce per 300 gallons of water
- Maintenance treatment dosage for pools: 4 ounces per 10,000 gallons of water every week
- Maintenance treatment dosage for spas: 1 ounce per 300 gallons of water every week