I assume you mean the 'bleach and borax steps' from the SS Recipe? Yes, you do. You don't start up your SWCG until you have your water balanced.

You can get 20 Mule Team Borax at Walmart (laundry aisle).

You need to use sand made specifically for pool filters.

If you go to the Pool Store, don't let them talk you into buying a bunch of stuff you don't need! Trust me...... they'll try!