40lb Box of Bare Ground calcium chloride pellets

Worked great for my pool to raise the calcium hardness. Dissolve in water first and add to the water. This is. 90% pure calcium chloride pellets. If you are using for a pool you need pure calcium chloride like this. Its dissolves very quickly in a 5 gallon bucket. I put 1 whole box in 40,000 gallon pool to bring my hardness up 100 points from about 150 to 250 ppm. Im sure it melts ice and snow fine with the heat it generated in the bucket. Half the cost of the retail pool products. Most commercial pools use this and baking soda (sodium bicarbonate) to balance water and saturation index. They purchase from industrial supply houses for a fraction of the cost of retail pool chemicals at big box stores. Ive been using this and similar for 15 years and never had a problem.