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Your cart is empty.This is a dry granular product that increases the total hardness in pool water to the recommended range.Test for calcium hardness with a reliable test kit. The desired range for calcium hardness is as follows: Vinyl Pools: 200-300 ppm, Tile and Exposed Aggregate Pools: 200-400 ppm, Marcite, Fiberglass or Painted Pools: 250-400 ppm. If the calcium hardness tests less than the desired range, add this product according to the included chart. Place this product into a plastic bucket already filled with swimming pool water. Do this in a ration of up to 2 pounds of product per approximate 5-gallon bucket of water. Slowly pour this solution around the perimeter of the swimming pool while the circulating system is operating. In a 10,000 gallon pool, do not add more than 10 pounds of this product per 2 hour period.
Crawforddk
2025-08-31 17:55:08
Arrived quickly and was nicely packaged.Good price.
S. Ryon
2025-07-10 14:38:00
We have acidic water (NW and rain) This neutralizes it and saves our copper plumbing.
Nikki G.
2025-07-06 13:37:56
We have a big pool and we need a lot of chemicals. As everyone knows pool chemicals are expensive. I compared the prices and prefer this one. It is a good price but it works fine. I recommend it.
Customer
2025-07-01 15:07:22
Good seller and good product. Works well and would be a 5-star item if the price would come back down. Recommend but will look for less expensive alternatives.
J*
2025-05-01 15:44:28
Dissolves quickly and completely.
Sam T
2025-04-13 11:52:38
Calcium chloride is calcium chloride. You can pay high bucks at a local pool shop or save a little and buy online. I do purchase a few items locally because they test my water and let me know what chemicals I need to add to my water.
Tina Smith
2025-02-01 09:57:49
Since I’ve bought this from you before it’s a good product
Paul
2024-12-31 17:45:43
Much better priced here compared to pool stores, for the same product. And the ease of it shipping to my doorstep - perfect! Would definitely I buy again.
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