CYA off the "best guess" chart. Advice?

[geoeremite]

Thanks Ben. I've already completed one drain/refill cycle and am midway through the second. Drained off about 28", which I'm estimating is about 40% by volume (funny how that works). Drains pretty slow since the waste valve is a standard hose bib and there are no valves in the pump/filter/heater area that can be used to force more water to waste (would have gone faster before cleaning my filter when the back pressure was 35psi rather than 14, ).

I figure 4 passes like this and I should be in good shape. I did verify that my CYA dropped to around 150-175 after the first cycle.

[geoeremite]

Four passes later, it looks like everything is in good shape. Here's the numbers:

FC 5.0
TC 5.0
Ph 7.2
TA 100-110
CH 200-225
CYA 20-30
TDS 400

(Pool store numbers that match the values I was able to independently measure, including FC,CC,CYA.) CYA could come up a hair, but I think that I'm not going to worry about it for a bit. Was glad to see that it held its FC overnight without issue.

[aylad]

Good job, you've obviously done your homework and have a great handle on your pool. Happy swimming!!

Janet