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Rx Clear Calcium Plus | Granular Calcium Chloride | Raises Calcium in Swimming Pool Water | Hardness Increaser for Swimming Pools | Helps Prevent Corrosion | 25 Lbs

4.3 (8) Write Review
Free shipping on orders over $29.99

$51.92

$ 24 .99 $24.99

In Stock

1.Size:25 Lbs


About this item

  • CALCIUM PLUS - Use Rx Clear Swimming Pool Calcium Booster when the calcium hardness reading in your pool drops below 150ppm. Raising calcium hardness helps prevent corrosion of metal and plaster surfaces. Also helps prevent foaming of certain chemicals.
  • BE AWARE - Do not add this product on the same day that either ph plus or alkalinity increaser has been added to the pool water. Add when water hardness levels drop below 150 ppm. Spread the product over the surface of the water while the pump is running. Do not pre dissolve this product.
  • PREVENTS CORROSION - Rx Clear Calcium Plus helps stop corrosion of metal surfaces such as light fixtures, railings, ladders, screws, pool cover components, pool heater components, and metals in your pump or filter. Also prevents etching, pitting, and delamination of concrete, plaster, gunite, shotcrete, and fiberglass pools.
  • WATER CHEMISTRY - One of the most important aspects of proper swimming pool care involves the maintenance of balanced water chemistry. When swimming pool chemicals are not at their ideal levels, swimmers can be at risk of contracting illnesses and suffering from skin irritation, the water can turn dull and cloudy, and pool or spa equipment, hoses, and surfaces can become damaged.
  • DOSAGE - The ideal range is 200 to 400 parts per million (ppm). Six lbs. per 10,000 gallons will raise the hardness level approximately 50 ppm. The minimum calcium hardness level is 150 ppm. Trust Rx Clear as the most reliable leader in pool cleaner products and supplies.



hobby turner
Reviewed in the United States on November 24, 2022
The powder easily dissolved in a bucket of water. Was exactly as described and no issues at all.
tina p. evan
Reviewed in the United States on July 22, 2021
Always buy this item every summer
Eugene
Reviewed in the United States on June 25, 2021
Just what I needed for my swimming pool chemistry.
Rick D
Reviewed in the United States on November 15, 2021
Good price. Had the wrong item sent to me but the seller quickly sent out right product and return label.
Kiren Patel
Reviewed in the United States on September 3, 2020
Fast shipping. nice packaging and good price.
Garry Day
Reviewed in the United States on May 6, 2020
Na
Hawgfan
Reviewed in the United States on March 23, 2020
I use calcium in our family pool every week. I cannot speak for the true chemical properties of using the calcium chemical but my pool guy said "use it", so I do and the water is crystal clear.
elizabeth Baldwin
Reviewed in the United States on June 30, 2019
fine