Thanks! That is what I thought.... but then there was a small hope that maybe my pool builder was smarter. Every time I mentioned if they knew troublefree pool , they didn’t. I’m on my way to a pool store to get some cya. My friend says that the guy at this particular store does not believe in using lots of chemicals just bleach or chlorine. I asked her about their cya and fc and she said she didn’t really know, as her husband took care of it. I’m hoping this guy might follow TFP.Don't do it. The pH reducer, dry acid, you can use up as you need to reduce pH.
The other three, dispose of. Use real products, not combination items that create a chemical stew to swim in.