New Pool Owner, just trying to make sure I am on the right track.
I've owned the house and pool for about a month now, and have tinkered with the chemistry a little, just enough to keep it limping along until I could devote serious attention too it. Pool looks Ok, but not great. No green and water is pretty clear. I might have the start of some black algae. Now that I finally have the time, I decided to start with a shock and OCLT.
So, current chemistry today before the shock:
CYA: 90 ppm
ran my numbers through Pool Calc and got the result of needing to add 1481 oz of Bleach
and 116 oz of Muriatic Acid
Added 1456 oz of bleach and 1 gal of Acid at approx 5:30 P.M.
When got home at 9:00, tested the water and got the following results:
pH: 7.8 - 8.0
in the morning I will retest and add Bleach back to Cl-: 35
I know I should replace some water inventory to bring CYA down, but with the current drought conditions in N. Texas, I'd rather not waste the water right now. I'm hoping that when we get some rain, it will help flush the pool some.
Thanks for taking the time to read and help.
P.S. using the TF-100 FAS/DPD test kit