I would like to reduce my chemical costs, but I want to make sure I buy the right stuff. I have a salt water chlorinator, so I am focused on opening the pool, and I will not be adding chlorine on a regular basis, but I expect to shock at opening.
Chlorine - Can I use any kind of bleach, or are there specific things that need to be in the bleach or not in the bleach?
Salt - Are there different types, good or bad, etc.?
Baking Soda - Any specific concerns here?

Any good info on brands and stores would also be great.
Thanks for your help,
Dan