RH too high, heat stress or light stress??

OldSkoolBro said:

Based on the curing upward leaves I would say light stress for sure. I could be wrong but only high light can do that to the plant. When it’s too wet and as you say above 60 many things that didn’t and have never happened can occur. Think of it this way it slows down or fatigues there breathing recycling and using nutes properly. If I were to guess your last grows had less RH which allowed for better light absorption. When it’s wet the plant can’t work as well. Your RH is honestly not bad for end of veg but early flower. I would lift light a few days to see if you can reduce the effects and allow a little better air flow. They will not turn all the way back but will be reduced stress which will allow better overall circulation of your plants. Reduce watering and raise your light a tad if you can. It’s tough to figure this stuff off out because indoor whether varies throughout the year some. So sometimes the same exact thing that worked for you last time may not produce the same exact results throughout your plants cycle. A safe bet is reduce light and water to try and pinpoint. Best of luck and you ladies still look healthy if your feeding lots nutrients slow those down as well. We overfeed our plants ten times more then they need. Also remember leaves will continue work no matter how bad they look unless they dry out they still are doing work for the plants don’t trim too much. From years and years of experience I know less is better. Way way less is the way to go.

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PopAndSonGrows said:

You're spot on about RH. I did three whole grow cycles with no rain, then suddenly it started raining here again which has raised my ambient house RH to above 50, probably above 55 if I checked the living room. But yeah these babies will go under a different light, in a bigger space with better airflow, very very soon.

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