Make $2200 worth of "Clear Rez" for $4 !!!

What up guys. I’m going nuts looking for non ph buffered shock. Google shows it doesn’t have chlorine in it. So no cal hydro stuff which is all the htx products just different amounts of calcium. The other is a sodium which I have in a spa cleaner with something else. It’s just not in front of me.
Or am I reading to much into it what I got is 54% calcium