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The leafs show some yellow. Only happens to this ...
Fruitgroweranswered grow question 5 years ago
It's because your temps are high, maybe your light is too powerful or too close. Maybe the humidity isn't as high as you think. I would try to bring the temps down as a raise humidity. Spray the leaves daily with water, should help.
Philindicusanswered grow question 5 years ago
It looks like your leaves are showing signs of stress. If you notice the edges of the leaf blades are curled. Your high temperatures aren't helping out the situation. You may be dealing with a LVPD issue (Leaf Vapor Pressure Deficit) I would try to increase the humidity to at least 65 68% by using a cool mist humidifier in your grow space this may help lower your temps into the high 86-87 F range.http://www.just4growers.com/stream/temperature-humidity-and-c02/vapor-pressure-deficit-the-hidden-force-on-your-plants.aspx I would also try to back off your lights to 20 inches for a few days to see if those leaf blades will straighten out again. It may be a bit of light burn about to occur. Hope this helps.š
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