Have have had my 30K gal inground for 20+ years . this year for first time I can not get any FC reading. Put in 17 gal bleach at 8am all gone by noon. Last night but in 15# granular shock, today FC 0 CC 0 HELP!
JasonLion said:You just need to keep adding chlorine until you burn off all the chlorine.
markscott said:Another question? the calculator calls for 12 gal of bleach, do I add this every night. for how long???
frustratedpoolmom said:you test, enter your FC result in the "now" column, then your shock level in the "target" and hit calculate and it tells you how much bleach to add.