Edges of leaf turning inwards

Plants are about a month and a half since germination. Still vegging. The upper leaves on about half the the plants are curling inward. They're under a 600watt MH conversion bulb. Is the curling a problem? We aren't adding any nutrients to the soil and they were transplanted about a week ago. Thanks

Is it healthy tissue? IE: Dry Brittle or green and healthy? They may just be very happy or maybe need some nutes to give em a boost. You should also post specifics like the medium you are using and size / age of the plants. Be descriptive

How far away is the light? They either need nutes, the lights to close, or your Ph is out of whack.....Can you post a picture? we can help better with a photo. what are the room temps? room set up?

How's the humidity as well. Curlin up means heat stress typically. I they look like hot dog rolls you need to improve your temps

Bayou bud said:

How's the humidity as well. Curlin up means heat stress typically. I they look like hot dog rolls you need to improve your temps

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YEP! People in Cali know whats up!!!!!!!!!!!

I'll grab some more specifics tomorrow but I'm pretty sure it's the temperature now that you all mention it. I have a 600 watt conversion MH running and it was in a hood with a glass screen thingie. I took the glass out and put the lamp pretty close to the plants. About 5 inches away to the closest plant. I had heard that the 600 watt MH conversion bulbs did not emit nearly as much heat as others and that you could do that. I didn't fry the plants or anything I just thought it might be something to look into. The glass screen is back on and we've moved the light a little bit further away. Thanks for the info =D