Hi Truck79, I don't know if you've seen this link https://www.autoflower.org/f90/deficiency-pics-16474.html it has photos of deficiencies that may help. You said that your pH is 5.5 and 4.5. Is that the water you are giving or the water run off from the plants? I assume the latter but want to make sure. Also, what is the watering schedule? It looks like maybe overwatering but maybe some of the more experienced folks out there will jump in. Is the yellowing continuing to spread or is it just those leaves? I know many questions.
Gregblex
Gregblex
