Calcium Chloride/Dowflake/Tetra Flake all the same???

[JaySav]

It keeps getting harder and harder to spend $50 a 25lb bag for calcium. I know in pool school it says Dowflake and tetra flakes are the same thing, my main question is: last time I bought calcium I’m pretty sure it was 100% calcium. The Dowflake looks to be about 83% and the tetra flake looks to be around 77% calcium. Is this going to change anything or is it all the same. Attached is a pic of a bag I found online. I would also very much appreciate some advice as to where to either get it locally or online for a reasonable price. I’m in the mid south so not likely it’s floating around hardware stores especially this time of the year. Thanks.

 

[Richard320]

Look for Snow Joe at Home Depot The red label stuff

SDS says it's pure.

 

[JaySav]

I ordered some. Thanks a lot!

 

[gworrel]

Too late but Sam's Club has the same brand in a 25lb bag for only $10.98 with free shipping. https://www.samsclub.com/sams/25-lb-pellets-bag-calc-chlor-ice-melt

 

[pooldv]

Just a note that in most cases Lowes and home depot will ship deicer to the store for free pick up for folks who live in the south or during the summer when deicer isn't typically stocked at the store.