Just got my TF-100 kit and was going to slam my pool as a "First try" to know better how to do it next spring and to have it in good shape for fall. PH is ~7.5, maybe a tad higher. However I did the CYA test, twice, and got 90-100.
I'm assuming that slamming it at this level is not so great and probably not recommended. My dilemma is that we are largely done for the year and I'm wondering if draining it, filling it, slamming it and then draining it again is worth the trouble for the experience. OTOH I'm guessing that if I drain it down and fill it lowering it to 60-70 and then do it again next spring I could be down in the 40-50% range which would be good.
My other concern is whether I'm doing the test correctly or not. I was thinking of doing the test on the tap water in the house and was wondering what the CYA *should* be there. I'm guessing very low to non existent.
On another, pool guy said my CYA was fine. At this point I don't have a whole lot of faith in the pool guy. He did an inspection on the pool before we bought the house and then we brought him back to do "Pool school" and at that point he ends up finding several things wrong. Does me no good AFTER we buy. Was planning on having the same company come back to "Educate" us on closing the pool, but am lacking confidence in the company. Any suggestions on finding a company that one can have faith in? Is there certification or something for pool people?