I am needing to raise the CH on our pool and want to know where I can get some flakes? I saw a small 4 pound bag at HD or Lowes but nothing larger. Seems like someone told me that they sell large bags but doing a search on their websites didn't turn up. Was trying to find a local source.
Where to buy calcium chloride flakes
- Thread starter klanel
- Start date
I always use amazon..
Kind of have to shop around at different brands. The brand that's cheapest ( nothing is cheap anymore ) at 10 pds might be the most expensive at 25 pds.
I did a drain and refill earlier this year and bought 100 pds,
Kind of have to shop around at different brands. The brand that's cheapest ( nothing is cheap anymore ) at 10 pds might be the most expensive at 25 pds.
I did a drain and refill earlier this year and bought 100 pds,
- May 11, 2021
- 973
- Pool Size
- 7000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-30
There are few brands of ice melt calcium chloride is pure enough to be used on the pool. It comes in 40lb bags. The challenge is finding the pure stuff.
I have used this at about $2 / lb. https://www.amazon.com/dp/B07B7ZBCXQ?psc=1&ref=ppx_yo2ov_dt_b_product_details
I‘m going to guess it’s overpriced (seems about the same price as from many pool suppliers so usually that means overpriced lol).
I went that route as the label says pools instead of sidewalks so I figured my odds were better of doing no harm. Over time, the entire box has been added to the pool. No visible ill effects. It did raise CH exactly as CaCl2 would be expected to.
I‘m going to guess it’s overpriced (seems about the same price as from many pool suppliers so usually that means overpriced lol).
I went that route as the label says pools instead of sidewalks so I figured my odds were better of doing no harm. Over time, the entire box has been added to the pool. No visible ill effects. It did raise CH exactly as CaCl2 would be expected to.
I have looked there
That was a concern I had, some have this percentage listed and I have to wonder what makes up the remaining percent.
At least it says for pools. Since I don't really know, I am thinking that one listed for pools might be the safer choice.
Thanks for the replies!
I checked the label on the box more carefully and it does say 100% calcium chloride. At least that’s what it claims on the label. 
- Jun 8, 2019
- 4,576
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Look up the SDS for the brand. Sometimes I see 93% calcium chlorine, 5-7% sodium chloride (which is just a small amount of salt). I wouldn't hesitate to use that, myself, depending on how much I needed (if I needed a lot it could make a difference).
Also, I generally assume any white substance from who knows where is melamine mixed with baby formula, but it does not react with CYA and there’s a baby formula shortage, so my bet is it’s pretty pure calcium chloride.