I am new to this forum (I started an intro thread already) and I have a 20,000 gallon in-ground vinyl lined 16'x32' pool.
FC - 11.5ppm
CC - <0.1ppm
PH - 7.5
TA - 180ppm
TA - ~117ppm (adjusted for the high CYA per Taylor instructions)
CH - 260ppm
CYA - ~120-150ppm (I have a Taylor K-2006 test kit and used the method described in the pool school to test for high CYA)
Water temp is 83 degrees Fahrenheit and gets direct sun.
I don't have an algae problem at all that I can tell. My OCLT showed only a 1.0ppm loss of FC
I do not have a phosphate test kit and I understand from reading things here I don't really need to worry about it. My water is cloudy, I can see the pattern of the liner on the shallow end and can just barely make out the liner seams on the deep end. My pool store tells me my phosphates are high and that is why my water is cloudy. They want me to use a flocculant that will reduce the phosphates as well as take all the suspended things that are making my water cloudy to the bottom and then vacuum it out to waste.
Is that step necessary since I am going to drain a good portion of my water and refill so I can lower my CYA to a normal range of 30-50ppm? Will doing this and SLAMing the pool clear up the cloudiness? I am not used to cloudy water at all. My water is normally crystal clear.
I had always used trichlor tablets in an inline chlorinator and in all the years I have had my pool I never had CYA this high. Any ideas as why just now my CYA is off the charts? I also never tested my own water, I always relied on the pool store since it is just up the road from my house. I have stopped the tabs and am only using bleach. Once I get the CYA in proper range as well as all my other levels should I just stay away from the tabs and stick with bleach? How much bleach will I need on a regular maintenance basis? Will I be needing to test daily with my FAS-DPD test or can I use something a little less expensive to do daily testing and only use that for detailed testing?
That is all for now and look forward to feedback.
Thanks in advance!