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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.
Krystian
2025-09-03 21:57:00
I found that this works well. I've been monitoring my pool for a while and had to add Calcium for the first time after a big bailout.It does require a 5 gal bucket to dissolve it into solution before adding, but it also dissolves quickly in there. After that, you just dump that water-calcium solution along the edge of the pool while going around it.I added 2 lbs initially to see how dramatic the Calcium increase would be and found that it went up close to what the bag said it would after adding and waiting two hours.It is worth the money and is pretty easy to use.
Felipe
2025-08-29 17:58:07
works great, way cheaper than local pool store, no complaints
Ken Schurman
2025-08-25 15:54:50
Works great fast delivery
Cah13
2025-08-23 14:03:21
Good price does the job dissolves well a little messy with the screw on lid but keeps the pool going
Andrei
2025-08-08 14:55:11
I haven’t had to fiddle with PH or total alkalinity since I got my calcium to the correct level, my pool chemistry has been rock solid stable ever since.
roy v brannan
2025-08-06 19:37:15
Reasonably prices calcium for balancing the chemicals in my pool.
JBM
2025-07-27 15:52:22
Best price for basic calcium increaser for your pool
Tom P
2025-07-09 12:37:18
I like that the product is granular, it ships easily and is easy to pour from the well designed bag complete with a cutout for carrying. I bought the 8 lb bag and it raised the hardness as stated on the chart, about 100 ppm. I had to install a second bag to get my 7000 gal pool back to a normal reading. We have had a very wet spring and summer, and I have learned rain water is soft.
Krystian
2025-07-07 15:46:02
I found that this works well. I've been monitoring my pool for a while and had to add Calcium for the first time after a big bailout.It does require a 5 gal bucket to dissolve it into solution before adding, but it also dissolves quickly in there. After that, you just dump that water-calcium solution along the edge of the pool while going around it.I added 2 lbs initially to see how dramatic the Calcium increase would be and found that it went up close to what the bag said it would after adding and waiting two hours.It is worth the money and is pretty easy to use.
Felipe
2025-06-28 18:29:38
works great, way cheaper than local pool store, no complaints
Ken Schurman
2025-04-14 14:37:03
Works great fast delivery
Cah13
2025-03-23 14:00:09
Good price does the job dissolves well a little messy with the screw on lid but keeps the pool going
Andrei
2025-02-22 17:54:11
I haven’t had to fiddle with PH or total alkalinity since I got my calcium to the correct level, my pool chemistry has been rock solid stable ever since.
roy v brannan
2025-02-09 09:02:30
Reasonably prices calcium for balancing the chemicals in my pool.
JBM
2025-01-02 16:42:53
Best price for basic calcium increaser for your pool
Tom P
2024-12-29 16:13:45
I like that the product is granular, it ships easily and is easy to pour from the well designed bag complete with a cutout for carrying. I bought the 8 lb bag and it raised the hardness as stated on the chart, about 100 ppm. I had to install a second bag to get my 7000 gal pool back to a normal reading. We have had a very wet spring and summer, and I have learned rain water is soft.
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