Hi all. Firstly I want to say that I've been using this site for all of our pool questions and love the Pool School and Pool Math. Thanks to whoever is responsible.
I have an inground pool with approx. 23k gallons on a sand filter. Long story short, we got in trouble after some human error on a TA test earlier this month and got it too high, as well as the pH. We gave up for a week or so and I decided to dedicate today to trying to fix the levels and our now dark(almost black) green pool. It was fairly overcast most of the day and not a lot of direct sunlight. So this morning around 8:30 I broadcasted 1 gallon of muriatic acid, and tested one hour later and the TA came down to 80 and pH at 7.2. I then decided to start SLAMing. The first application was 6 lb. of 73% Cal-Hypo. Tested FC 30min later, and we had 1 ppm. So I then hammered on it and placed 10 lbs. of 73% Cal-Hypo and 4 gallons of bleach. Tested FC 30 min later and we were up to 14ppm. I let it go for one hour and we were back down to 4ppm of FC. So I hammered on it again with another run of some mixture of the dry shock and bleach. It started to show some progress as I was loosing less FC each time I tested, but I would broadcast more product to . I did this all day today and at 8:30pm I was back down to 4ppm of FC, so I put in almost all of what we had left to shock and just tested it at 9:45pm and came up with 8ppm of FC. All in all today, I used 24 lb of In The Swim Super Shock at 73% cal-hypo, 8 lb. HTH Super Select Shock at 56% cal-hypo, 6 121oz containers of 8.25% bleach, and 1 gallon of Austin's Pool Tech Liquid Shock. As a foot note, before starting, the CYA was 0.
I feel that all of this is rather excessive and have dumped enough $$$ into this pool that it should be in my favor by now, and I feel defeated.....AGAIN.
I sure hope I did something incorrectly, or missed something....because between this latest run and what we spent to 'open' the pool, it would of been easier to just completely drain the pool and refill it.
I will report back in the AM, with the morning FC level...my hopes aren't high.
Thanks in advance for input and reading about my struggle.