So, (measured with TFT kit, fresh) since I have
15ppm FC
0.5ppm CC
110ppm TA
7.4ppm Ph
200ppm CH
37ppm CYA
Is it safe to go in, say for a short time, or should I wait for another week?
I figure, if I deduct 1plm FC for every 10ppm CYA, I still have about 10ppm FC equivalent, maybe a tad less...