I am in the process of adjusting my SWG run time (or %-age) to generate my target level of FC (i.e. 4-6 ppm). Since my level of FC has been about 14 ppm, a couple of days ago I decreased the amount of run time from 6 to 3 hours daily & kept the same percentage at 35%. I noticed that the FC level has not changed. Should I allow more time to lapse before further decreasing the SWG run time or percentage? As indicated below, my spa capacity is 2,200 gallons. Thank you kindly.