Heat stress?

RecUseOnly

RecUseOnly

Active Member
My plants are wrinkling a little and i was wondering what the problem is. any ideas? MY HPS is a little close to the plants because im running out of vertical space and they dont stop growing lol.
 

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spiked1

spiked1

Well-Known Member
That is heat stress, you can see the sides of the leaves curling up.
You need to increase ventilation, and if you can't raise the lights try tying the branches down.
 
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