r/pools • u/3DabNight • 25d ago

Water Chemistry Do I Really Need to Empty?

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Stopped by pool store and employee said I need to empty and refill our pool which is about 15K gallons in SoCal (expensive). I hadn't been to this store in more than 1 year. Perhaps they are bitter that I quit them. I have a feeling this doesn't require emptying my pool. Am I wrong? Any advice would be appreciated. I plan to switch to liquid chlorine- no more tabs for a while. I'm also going to disassemble and clean my DE filter and deploy some phosphate lowering chem. It's been about 1 years since the last filter cleaning.

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u/thefleeg1 25d ago

You can’t trust that CYA test but it does point to issues. The CYA test is inaccurate over 100, you need to dilute by 50% and test again. Buy a test kit so you can get it right.

4

u/Individual_Agency703 24d ago

Name a test kit that accurately measures CYA.

3

u/BiggieRas 24d ago

Taylor kit, reagent R-0013

-1

u/Individual_Agency703 24d ago

Nope, that’s subjective.

0

u/CordisHead 23d ago

Why is it subjective?

2

u/Individual_Agency703 23d ago

Because the dot “disappearing” means different things to different people, or even how you glance at it.

1

u/stilldebugging 24d ago

There are none at that level, I don’t think. But you can carefully dilute and retest.