Is this a pH problem or heat? (with pic)

Bump for some help...

MakinProgress said:

She just woke up from her nap and is looking exactly the same. The temperature has been around 75 the entire time she was in her dark period... Should a 6 hour dark period at that them have given her enough time to relax?

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Plants don't need sleep.

Okay, but that doesn't really answer my question. She's still not relaxing her leaves even with the temp dropped down to about 75 (with lights on now) and her pH is at a 6.5-6.8.

you want her to relax?

That's just my way of describing it... but yeah. Her leaves are all curled upwards (as shown in the picture at the beginning of the thread) and I want her to "relax" and stop curling.

From what I've read it's either heat or pH, but according to my readings, both are fine.

I can hold my hand at the top of the plant and barely feel any heat at all from the bulb that's about 2-3" away from the plant.

only reason a leaf curls like that is to decrease the surface area to prevent water loss.

If that isn't heat, then there is something seriously wrong going on in your medium... or a too low humidity. Do you know if your area has a low humidity?

I live in Florida, so I'm guessing no... but I'm not sure.

Is there any way to tell without heading out and buying something to test the humidity?

I just bought a new thermometer, so I'm going to get test the temps in just a minute.

Those leaves probably won't relax again anyway. they'll stay like that now for as long as they are on the plant.

you sure it's not heat? doesn't have to be hot now, but in the past?

In the past, yeah it got pretty hot. I didn't know the leaves would stay that way. Learn something new every day (or in my case, multiple times a day!)

She seems to still be growing well. I fimmed her top yesterday, and her new growths took off running and are already getting pretty long, maybe 1/4" just 1 day after they showed up.

The temps were a little high, but that's because I tossed an extra bulb in there for an hour or so today to give my sprout some extra light. I just took it out to get it back down. I'm going to give it 20 minutes with the top of the box off and the fans running, then replace the top and test again about 20 minutes after that.

so long as it isn't too hot now then you should be fine. all the new growth coming out ok?

Yeah, all the new stuff looks great. It's still small, but it's looking just fine and healthy.

In the morning it'll probably have shot up, as it does pretty much every night and I can get some good photos then.

Thanks for the advice. +rep