[GenieMan]

Not sure why it's doing this? I give it 3 heeping tablespoons of Dr Earth All Purpose dry nutes about every 14 days usally a few days sooner. I also recently added about a inch of new soil to the top. I usally give it water every 2-3 days when it's thirsty and pots lighter. Humidty is around 60 and temps hover around 78. So idk what's going on? Is it killing off old leaves? I just changed to 12/12 I had it vegging for about 2 and half months while my auto finished up. I been following the Dr Earth nute schedule that called for 1/4 cup of dry nutes every other week.


Plant: Grape OG ( photo)
Soil: Foxfarm Ocean
Humidty: Around 50-60
Temps: Around 78
Nutes: Dr Earth All Purpose
Water: Tap water which was tested to be in range and also never had a problem with other grows.

 

[LoveGrowingIt]

Phosphorous deficiency would be my first guess. It's a mobile nutrient, so the plant will move it from older leaves to new growth.