Re: Not sure what my results mean - do I need to shock?
Ok, just so we are clear... 90 is the cya level after doubling the actual results? And for the cc, are you using a 10ml sample? If so, and it took 2 drops to clear the water then your cc is 1ppm and you need to shock (which is either 20 or 25ppm fc depending on whether your cya is 90 or 180.)
-Eric B. 16x32 rect 14,364 gal AG (Intex Ultra Frame); 14 in sand filter; 1 HP 2800 GPH pump; 8 hrs; Taylor K-2006c, utility water, debris cover
@Best Guess chart http://pool9.net/cl-cya @K2006 http://pool9.net/testkits
Re: Not sure what my results mean - do I need to shock?
Yes, CYA is 90 after doubling. I don't know what the heck I did yesterday when testing CYA! Your instructions were spot on and helped me immensely.
I thought the CC was 1 but wasn't sure, and yes I was using a 10ml sample.
Thank you so very much for helping me I really appreciate it!
in-ground gunite pool 20x40; Sta-Rite Dura Glas pump; sand filter
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