This sounds like the scenario I am seeing.
I dosed my pool yesterday morning with polyquat after having had it consistently at 20ppm of CL for teh several days preceding. At the time I added the polyquat the FC was at 11.5, CC at 0.5. Tonight the FC has dropped to 6.0 while the CC remains at 0.5.
Should I raise the TC level back up to shock level now in order to close?
I also asked in the fall prep forum at what pint is there no longer a danger of filtering out the polyquat by changing multiport back to filter?
thanks,
John
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