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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.
Jerseygirlsouth
Reviewed in the United States on June 2, 2025
It's a good product but what in the crimes against humanity is going on with the bucket? It was impossible to open so we used a screwdriver and hammer and made a hole in the center of the lid to release the pressure so it was easy to pry off. The lid does not fit back on properly but at least we were able to treat the pool. Please get new packaging.
Dbeech411
Reviewed in the United States on February 24, 2025
Shipped fast. Just as described.
JExizian
Reviewed in the United States on February 18, 2025
Very good price
Cyndi G
Reviewed in the United States on April 7, 2025
Good price
J thompso
Reviewed in the United States on April 6, 2025
Good quality and price
Angel M.
Reviewed in the United States on November 16, 2024
Fast delivery and works perfectly.
A Customer
Reviewed in the United States on October 27, 2024
Delivered as promised and works as normal.
Robert P. Tripi
Reviewed in the United States on October 18, 2024
It did the job. Had 10lbs left over or next time.
Ward Smith
Reviewed in Canada on February 26, 2018
Works fine. Best price I found.
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