First off, I want to say this is a great site and full of great info. This is our second year with the pool, last year I was winging it and after initial issues with no CYA in the pool/ chlorine depletion, things were fine. I just opened the pool this past Saturday, and water/pool was very clean/clear. I wised up and purchased the TF-100 test kit. Great kit. Pool truck topped me off on Monday evening. Ran equipment 16 hours after. Initial test results Tuesday evening around 5pm were as follows: PH 7.4, CYA 40, Chlorine 0. So, I applied a hair over 4 of the 128oz 12.5% jugs from late last year that I stored indoors. Continued running the pump and retested at 10:30 pm. Tested FC to be at 25, I believe my SLAM target would have been 16 FC. Did not get a chance to test early next morning like I should have, but tested at 5pm Wednesday as follows: PH 7.7 which rose probably from the high FC, FC 21, CC 0, Alkalinity tests high per literature I read. Tested again this evening same time around 5pm and FC 16ish, CC 0, PH 7.7 still a bit high. FC now at original SLAM target after 3 days with no CC and very clear water....am I wrong to assume I do not need to 'shock' the pool again? I only lost 4 FC after the first test/ 19 hours. Thanks in advance.
Water Chemistry
- Thread starter Brett2745
- Start date
We really don't recommend a shock process, you either go through a full SLAM of not. If the water is clear, you have no CC the only thing I would suggest is conduct an OCLT. If you pass that you are golden. Time to swim.
I'd question whether you even needed to shock the pool on opening. I'd say you're done.
You may be right about not needing it. My initial snap judgement was to throw it in because it was 0, but maybe less would have held. I am still trying to figure this stuff out, lol. Thanks for the replies.
