Re: Can't stabilize ph
Sorry, I wasn't clear. When I say to take a reading immediately, I mean immediately after adding and mixing the pH reagent with the water sample. If I let it sit after adding the reagent, it will change to purple /false high; the higher the FC level, the faster the color change to false high occurs.
I've certainly never had a problem with the pH test at FC levels below 10 and am surprised you're having trouble unless you're adding the pH reagent and letting it sit.
22'x40' Grecian Lazy L 20K gal IG vinyl pool; Aqua Rite SWCG T15 cell; Hayward Pro Grid 6020 DE filter; Hayward Superpump 1hp pump; 12 hrs; Taylor K-2006; city; PF:6
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