What's wrong with these

Keeprollinup

Well-Known Member
I agree with the heat stress.

Also, what's your medium? Do you have any amendments mixed in so the roots can breathe?
Hi I have perlite in there toped up with 4inch coco. I've changed the lighting and there looking good after only 6 hours so I think they were heat/light stressed. Thanks all for your help.
 

Keeprollinup

Well-Known Member
Im new and just wanting to make sure im seeing what you are. And to see if I'm actually retaining anything I've read lol. So the tips are a bit droopy the edges are starting to cup and there are some crispy leaves (<- mainly 3rd pic) and almost all in the top 1/3 of the plants
You got it bud heat stress it was back to normal after 6 hours of changing the lighting.
 

Roger A. Shrubber

Well-Known Member
low RH. the plant will use more water, but the nutes in the water will become concentrated in the leaves, like salt building up on your skin when you sweat, except it's inside the leaves, they don't sweat like people, they transpire, which is similar, but different.
this will slowly cook them from the inside out.
lower the temp slightly, and raise the RH at least a couple of points. also drop the ppm of your nutes a little, till you get the other problems dealt with
 
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