is cool here in W Washington, a little sun now and then, pool is covered, water is clear
on 10/2 was using K-2005, diluted pool water 1:4, and found FC 2-3, so then 8-12ppm
have added no bleach and Rainbow is set to zero, ie closed
today 10/15 the chlorine test kit arrived from http://tftestkits.net/Single-Item-Tests-c6/
and returned FC 12 and CC 0
is it possible that FC has not declined for 13 days?