Need help with plant issue

Need some help with this issue I been having on my Grandaddy Purple plants. So this brown spotting and yellow leaves started happening when I transitioned myb plants into Flower. My lights are 14" from the top canopy. Originally my lights were a lot closer cause I had the exhaust inline in the tent. I then moved the exhaust out the tent and the lights up, a few weeks ago, thinking that would help and I haven’t seen a big difference. Temp stays at about 75-80° max. Humidity is around 35%. Plants are in 5 gal pots and I’m using Happy Frog soil. I checked the run off water for pH a couple of times and I’m at 6.2. I feed 2x a week. I’m starting week 7 of flower. Any suggestion or help is appreciated. Thanks!


It can be normal towards the end of flowering for leaves to be cannabolized or die off. It also could be the low humidity I shoot for 45-50%. I feel you should still pay attention to the VPD for correct transpiration. Depending on how high your feed is you could be burning your roots and/or plants. They don’t need as many nutes at the end. Happy growing

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