After a nightly drop test went from 19.5 to only 19I'm done shocking. After sitting in the sun all day, it's down to 13.5 FC. The target for my CYA is 5. What level is safe to go in?
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#1
After a nightly drop test went from 19.5 to only 19
13,500 Wilkes Vinyl AG (15'x30' rectangular)
Hayward Power-Flo LX SP1580, 1HP
Hayward S-160T High Rate Sand Filter
#2
You should try to keep all of your chemistry questions together in one place. I don't know what your CYA level is now, without hunting around through several other topics you have started, so I can't really answer your question about when it is safe to swim.
19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School
#3
CYA is 40 so target is 5, low is 3, what is too high.
13,500 Wilkes Vinyl AG (15'x30' rectangular)
Hayward Power-Flo LX SP1580, 1HP
Hayward S-160T High Rate Sand Filter
#4
With CYA at 40, it is safe to swim up to 15, as long as nothing is going wrong.
19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School
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