What's the temperature IN the res water? Are the pots sitting on a cold concrete floor?
It looks like overfert, but your ppms are REALLY low.
Try setting the pH right at 6.0.
What are you doing to aerate the reservoir?
stinkyattic Reviewed by stinkyattic on . Deficiency/Toxicity symptoms in hydro plants, help Literally, no. -DWC -T5 Flo -70-77* F -34-44% RH -Apprx 5th week in veg. -Fox Farm 3 Part w/ LK and CM+(alternating at res change) apprx. 10ml per 1.5 gallons / 3-5 ml CM+ and LK -Distilled water Rating: 5