I have been reading for about a week and have a similar thinking about chemicals and stores. I grew up with a 20x40 inground and currently have a 25 ft AG pool. I have always monitored the chlorine and ph, and use very little from the pool stores so the BBB method is a good fit for me. I do have some questions:

Facts about my pool
1) pretty much full sun
2) I never cover my pool (to much wind... cover last about 3 months) so I have a lot of leaves every opening
3) Using WM chlorine w/Bleach (3 gallon)
4) have used approx 30 lbs of baking soda
5) Have used 12 bgs of WM shock to go from brown/green to cloudy blue
6) Using a 4 test drop kit
7) wanting to move to the Intex SWG, but need to get chemicals stabilized
8) pump runs 24hrs/day

Mon/Tues --- Chlorine was good 2.0, PH low 6.8 or lower
Wed/Thur --- Chlorine was .6, Ph 7.8

I know I need to test for other things, but these are what I'm monitoring now.

Question-

Could the Bleach and Chlorine be battling each other?
I have just now found Borax (sold out everywhere) since my PH is OK should I still add some now


Thanks