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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.
Ken
September 5, 2025
Very happy with the results and pricing of this pool chemical.
Larryd54
June 28, 2025
Quality Product at a Reasonable Price. Prompt Delivery and Packaged Well. Will Recommend Seller to Others and Will Buy From Them Again When Needed .
Jo Young
May 11, 2025
Great price and fast delivery.
Sniperboy360
May 9, 2025
Drained and refilled the pool. Needed to increase the hardness. Bought the 25# box. This product arrived in a reasonable amount of time and worked perfectly. The instructions on the bag are accurate but if you are unsure of how many gallons of water are in your pool, I would advice adding half the recommended amount, test the water, and then add the rest as needed. Much cheaper than the national pool supply house too.
Randi
April 20, 2025
Good stuff poor packaging
Julian S Mendoza
April 4, 2025
Great product
Wendell Broussard
February 22, 2025
I needed some calcium chloride for a pool, but had trouble finding any locally and even more trouble finding it online in bulk where it didn't cost an arm and a leg. This was reasonably priced with a deal and has served its purpose. Pool is happy and so am I.
Tom Gregory
January 10, 2025
Fast delivery.Balanced my pool.issue perfectly.
Diana HQ
December 14, 2024
وصلني المنتج مسكوب نصÙÙ‡ داخل الكرتون صراØØ© تجربة سيئة لكن تم اعادة المبلغ لي بعد تقديم شكوى لخدمة العملاء. طلبناه كبديل عن مادة كلوريد الكالسيوم Cacl2 المطلوبة ÙÙŠ بعض التجارب الكيميائية.
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