Background EC#ckground EC

Hi all
am sure this has been asked befor but....
my background EC is .6 do i take this reading into account when adding nutes ?

that means your water is hard as hell, maybe look into r/o machine. my tap water doesn't register on e.c meter. i take it that is what you mean by background e.c?

yeah my water is a bit hard EC .6 PH 9.2

have looked into RO but am on a water meter as such would be very expensive to use