Hey guys looking for a little help. Running in FFOF temp is 78 degrees humidity at 65 percent in late Veg with the ROI-E680 recently increased lights 2 days ago from 45 to 50 percent and 2 feet from top or canopy
Running RO water been feeding cal Mag in every feed and just saw these signs on the leafs appear. They are dry and I’m about to feed again. Ive been doing the lesser mL/ L of cal Mag should Increase?
I feed 770 PPM going in pH 6.5
Run off every time is around 1800 and I know they say don’t stress in FFOF because it’s a “hot“ soil. I feed feed then flush.
Looking to clarify this is Cal Mag def. Or light stress?
Im decreasing lights 5 percent to see if it helps a little bit.
thank you so much all! Also this is showing on majority of plants.
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Looks like a magnesium deficiency to me too. Has the problem gotten worse or better?
Hi, I may be way off base here but that looks more like a magnesium issue maybe? My CalMag only has one instruction (1ml/L) but if yours has two then go to the higher one to see if that stops the problem.
Also check the PH of your run off as soil PH issues can also cause this type of deficiency.
I don't think it is light burn because it appears to be affecting lower leaves equally.
I might be way wrong on this and hope some else comments.