I see on pool math there are two types of Calcium Chloride. One being Dihydrate and the other I assume is Anhydrous. Ive been looking around the internet and all I see is the Dihydrate type. Unless I'm wrong. The dosage amounts seem to line up with the Dihydrate dosage on poolmath at least. I havent found anything that matches the Anhydrous version. The closest thing I have found from the dosage amounts is this: http://www.poolsupplymall.com/pool-c...reaser-15-lbs/ at 1LB per 10,000 gallons to raise CH 10ppm.
Ive seen that the Dihydrate type is 77-80% Calcium Chloride and the Anhydrous type is 90+%. That doesnt make sense since Leslies Hardness Plus MSDS shows 94-97% Calcium Chloride (http://www.lesliesmsds.com/Document/...f5030f1c83.pdf) and the dosage shows Dihydrate on poolmath.
How do you know which type you are getting?
Are there any brands of Anhydrous Calcium Chloride?