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Thanks! I'll try the overnight test tomorrow night if all goes well!

The water was clear before draining (I had recently shocked it), but had a teal-green tint. It also sported a CYA level so high that 2 or 3 drops blanked out the black spot on the test kit. I have the sock of CYA in the skimmer now. I will add chlorine when sun is down. Now, when the CYA is...

Thanks for the quick replies. The water is indeed tap water, so no need to shock at all? So at dusk tonight I will do the following: Raising FC to 5 by adding 124 oz of 10% bleach (assuming all the FC from last night has burned off, will test again to be sure) Raising CYA to 20 by adding 53 oz...

I'm switching to the BBB method today. I've just drained and refilled the pool yesterday due to gigantic CYA levels. After adding some chlorine last night and running the pump all night here are my numbers in the morning: FC: 2 TC: 2 CC: 0 pH: 7.6 alk: 110 CH: 170 CYA: 0 My Taylor test kit...

I'm in the middle of a complete drain/refill because of super high CYA levels (see my topic below if you want context). One of the things that worried me was a purple, crystalline substance that has formed on my plastic pool equipment. I can slowly get some of it off if I scrub hard with a...

Thanks for the reply! This helps ease my mind. . . The next question is about my purple creepy crawler--I'll post it as a new topic with a picture.

Hi all--first time poster here. I've found the site and discussions tremendously helpful! I moved into the current house with my first pool two years ago. The previous owner "taught" me what to do with the pool, and basically this consisted of testing only total chlorine and PH, adding tabs...