5000 gallon vinyl pool
TA - 70 consistently since pool filled 1 week+ ago.
just tonight measured at 80?
The resolution of the test is 10 ppm so this is withing normal error range. Disregard this variation.
PH floating between 7.2 and 7.4
just tonight measured at 7.0?
I suspect testing error unless it is repeatable and the pH is now stuck at 7.0 It happens to the best of us at times.
FC between 4 and 6.8 over the past few days with bleach added 1-2 x daily (not measuring bleach yet, just eyeballing right now) CYA 30-40
CC teetering between .2 -.4 (is CC this low a problem?)
In a word no. Anything below .5 ppm is acceptable.
it goes to .2 when FC is closer to 7 and .4 when FC is closer to 4. Should I raise FC to about 10 to get CC to 0?
In a word no. Not really necessary but shocking wouldn't hurt if you want to. With a CYA of 30-40 shock to about 12 ppm.
Why did TA raise? I haven't added anything but bleach.
Don't think it did, sounds like normal testing variation that is within limits.
Why did PH drop? It hasn't rained.
My guess is that it did not and the comparator was not clean.
I'm still trying to get a handle on pool chemistry
You are doint GREAT!
Thanks
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