Recent content by Morning Dew

My meter is a HM digital meter that has been factory calibrated to 342 ppm. Does your water ppm effect your solution ppm?

First I'd like to say that this is by far the best educational site for finding all the answers for my first time grow. Thank you I'll brief you on my system. Using an ebb flow 6 site, 5 gal res. 400w mh, 4' x 2' x 5' grow room, some pots all hydroton some hydroton & rockwool, ro drinking...