100 degrees F is pretty fucking hot if you ask me. They should never be exposed to temps like that. Even temps sitting at 85 aren't acceptable to me unless you have Co2 running in the grow room.

Looks like the top leaves are getting most of the abuse, so it's either too hot in there or the lights are really hot and you need to move them up. Can you get better pics?


"proper temperature for most marijuana strains is between 70-80 degrees, but using carbon dioxide will allow you to grow in temperatures as high as 85 degrees. At night, the temperature can drop 10-15 degrees without harming the plant."

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i have a can fan ready to go bringin fresh air in to the cabinet from the outside, just need to cut the wall and hook up. doing that today. then it will be ok.

got it all hooked up properly, the temp is now at 26C with the cabinet closed

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couldn't the leaves rolling under be a high PH problem? this sounds similar to what happened to me. what's your PH?

also, my temps are hovering between 80 and 90 and my plants are doing fine.

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Yea, I was also going to mention that..what other things can you tell us?

I got all caught up in the heat discussion..

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i agree grnman, 100 degrees is way too hot!!! i am getting away with a yeast/sugar co2 generator to combat the 90 degree temp. hopefully the temps wont go out of control with summer coming. i only have 6 weeks left!

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Drugs are bad, I don't do drugs, Just Weed
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for ph do i just test the water b4 i water the plants?

pH the water going in. Then test the water draining out. You want them to match (or close) If the drainage pH is out of whack, make small changes to the water going in to even them out. You could also flush if you aren't using time released nute soil. (ie: MG or the like)


But now that you have the heat under control, let them chill for a bit and see what happens.

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well we've got hot weather here now and guess what? too hot again!!!!