thefullspectrum
Well-Known Member
Yeah I upgraded to a blue lab truncheon thinking it was a must for all hydro growers.Pretty much anything that comes through that can be calibrated, I do. Leaving less to chance is a good thing.
I prefer to use my $7 shitheap meter because it displays exact figures not .2EC intervals like the truncheon. Good to have a couple of options to compare against.