In The Swim Calcium Hardness Increaser for Swimming Pools - Fast-Acting, Scale Prevention - 94% Calcium Chloride - 25 Pounds

This is the second time I have ordered. They fill the whole bucket with their products. I use this in my salt water pool and works fantastic. This product does not cause cloudiness in my pool. They often have sales and I can get this at a way better price and more amount then our local pool store. The only draw back is that it is not quick dissolving. I do have to brush it off the bottom of the pool for about a minute and then it will be completed dissolved.

Good productGood priceFast delivery

Love this. Packed well in a good box. Sealed inside. Reminder card to order more... Great value, works as expected.

excellent results

High quality, easy to use, no chlorine just brings the pool water back to totally clear after a hard rain which makes the water too soft.

This is by far the best container! The lid locks and has a release connector.

It's even bagged in the pale love it

I depend on quality products to protect my families health and comfort when spending hours in my pool. I want to know that we all are soaking up fun times and sunshine and not some sort of unusual chemicals that came from using inferior products. Safe pool supplies equals happy pool people!