I picked up this conductivity meter today but am not to sure how to use it. It didnt come with instructions. I was told that I want to get a reading of 1.4 "plants are 30 days old from seed", but when I put the meter in i get 09.0 when I want a single reading and 090 when I hold the button for 5 seconds to get a multimeasure.
Does anyone here use one of these of know what I should be doing with it.
Thanks