Ppm for lettuce?
I want to maximize our lettuce production. We have a ppm rating on our water of about 300. If I follow the directions on my fertilizer I end up with over 1000 ppm I have been throttling back to about 600 ish. With a ph around 6.5
In my old res the lettuce were consuming about 50 ppm a day. I put the new res in today and just ph corrected and brought the ppm up to about 600.