Thanks, misty. I ref your posts several times, I'm sure.

The info that I'm desperately looking for right now is what all the readings that these meters take should read.

What I mean is, what range in EC is a hydro grower shooting for? and what about PPM? How many PPM should there be in the nute solution? And pure honesty one this point, I don't even know WTF CF is, muchless what the good range is. I don't see any point in getting this equipment if I don't know what the readings mean, and I can't seem to find anything that will really explnain what they are and what the good range is in hydroponics.