TH was 100 at 7:15 this morning.
The FC and the CC were the same color on my test this a.m. I used a 1 pool : 4 distilled water dilution that showed 2.5: which would give me 10.
I don't have a disappearing black dot test. All I have is the 5 test kit and strips...I know I need the more extensive kit but I can't locate it locally and it takes time for delivery.
The pool is now cloudy to the point I can barely make out the vacumn head at the bottom of the 5 foot deep end.
When you advised to keep the chlorine high, I follow the chart according to my stabilizer level of 150...so I should maintain 25ppm and test the level with the dilution method. And I believe I read 2.5 gallons of bleach raises chlorine 5ppm per 10k gal...so in theory (assuming the FC is 10) I would add 7.5 gallons of bleach.
Then I'd add acid to lower the TA. Sound right?