AnnaK,

1.) When I am buying salt for my pool I look for the highest purity and no additives.

What I usually end up buying is item# 25654 from lowes.com

Pellets and 99.8%

Lowes does have "Pool Salt" on their webpage, but I've not seen it in the stores local to me and it is 99.6%
Their "Solar Salt" is 99.6% and is about $2 cheaper per 40lb bag. I imagine it would work, but it doesn't meet my first need of getting the highest purity possible. I'd go to another Lowes or HomeDepot store to get it if my closest one was out.

2.) Say NO to copper.

3.) Answered by Chem Geek

4.) There was a learning curve to mine, but once you get the hang of it there is no easier method of sanitation in my opinion.

Hope this helps.


Regards,

Mark