Where to buy salt in Canada

[dvleemin]

Our pool is being installed in about a month, and I'm starting to look for salt for the SWG. I live in Edmonton, Alberta, Canada and can't seem to find it. All of the water softening salt has an additive. E.g.:
-SIFTO Crystal Plus Salt with resign cubes (https://www.costcobusinesscentre.ca/sifto-crystal-plus-salt,-20kg.product.100384180.html)'
- Windsor Clean & Protect Water Softener Salt Pellets (Windsor Clean & Protect Water Softener Salt Pellets | Walmart Canada)
- Sifto Ultra Crystal Water Softener Salt (https://www.canadiantire.ca/en/pdp/sifto-ultra-crystal-water-softener-salt-20-kg-0596505p.html#srp)

Anyone from Canada have ideas?

 

[mknauss]

The Windsor one appears to be as pure as you will find - 99.7% pure salts. Does not mention Iron or other additives.