Live in south Florida. Pool is in-ground, 15 X 30; holds close to 20000 gallons. Use TFTest Kit 100 . Am having difficulty lowering FC. Have SWG that operates at 35%, and a variable speed motor that operates 8 hours daily at 3 different speeds. Figures on 10/8/2016 are as follows:
Will lowering SWG to 25%, and adding appropriate chemicals to bring pH, CH & CYA figures to recommended levels help bring down FC figure?
In addition: Test Kit directions for measuring CH indicates that "red indicates the presence of calcium." Mine turns more pink than red; and becomes a light blue. Are these shades within bounds of accuracy?
Recommendations most welcomed!
And for the CYA test, the directions mention to fill until I can "no longer see the black dot." Does this mean completely 100% not seen?