Still can't get it right

[kirklaura]

I was getting really high CYA levels and I replaced at least 1/2 of my pool's water with new. I let that circulate for 24 hours and here are the new results

pH 7.2
FC 4
CC 0
CH 250
TA 150
CYA 70

 

[YippeeSkippy]

Do you have a SWG? If so your CYA is fine. Your FC is too low for 70 CYA though. [FC/CYA][/FC/CYA]

If not.... your CYA must have been about 140ish to start.

How's the water looking? How are you testing?

 

[BuckeyeChris]

how high was really high? Was it over 100? What test/test kit got you a reading over 100? If your CYA was 140-160, then you would expect to be at 70 after a 1/2 drain.

Your FC is still a touch low, but all your numbers are within usable range, just some tweaking but nothing bad.

 

[Casey]

You may be fine to just let it ride if you get a lot of rain. Get the FC up.