Which product to raise Calcium Hardness?

[killercamine]

Bare Ground 40 lbs. box Cal Plus Calcium Increase PCAL-40 - The Home Depot


Pellets of Fire 50 Lb. Calcium Chloride Ice and Snow Melt + Deicer, Works to -25°F CP50 - The Home Depot

Bare Ground 40 lbs. Box of Calcium Chloride Pellets BGCCP-40 - The Home Depot

My pH- 7.8
CH- 220

Using the pool math calculator I have to add 40 pounds of calcium chloride, but from these products I don't know which one would be the best.

The Bare Ground Cal Plus Calcium Increase states (Calcium Chloride 32% by weight) and that's it.
The Bare Ground Calcium Chloride Pellets states (Calcium Chloride 60-10% by weight).
and the Dart Pellets of Fire Calcium Chloride Ice and Snow Melt + Deicer (Calcium Chloride 90-94%, Water 1.3%, Potassium Chloride 1-2% and Sodium Chloride 1-3%)

Any help would be appreciated

 

[Newdude]

Personally I will not try brands besides Puritech from Amazon. Many have fillers, especially the de-icers, and either you need much more product because its mostly salt, or the additives are harmful.

It's more expensive than the de-icers but still considerably cheaper than the fancy pool store stuff. It's a happy medium for cost and quality.