Tmurrayftw
Active Member
I'll order one on Amazon our hardware stores dont have shit lol would one of those laser thermometers work i believe i have one
Can anyone tell me what is causing this leaf curl
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Tmurrayftw
Active Member
I'm so glad there is a community like this to help new growers
Tmurrayftw
Active Member
The light I have em under is extremely powerful it pull 450 w from the wall but i thought I had it hanging high enought ive only ever used smaller 150 watt leds in the past maybe its only burning that plant
BluntMoniker
Well-Known Member
The leaves are telling you otherwise
Look at the picture you posted. ONLY the top leaves are thin and tacoing. The ones just below it are wide and perfectly fine... likely because they are further from the heat source. And im sure you'll notice that same trend if you look at the plant itself... the leaves at the bottom are fine, leaves up top are much thinner, and the ones at the very top are the ones tacoing.
Yes.. the "laser" thermometers are optimal for getting surface temperatures. But even if you don't have one, just move your lights up some and see what happens. If your at 18in now, id go up another 6in, give it a week and see what happens. If the leaves aren't brown/crispy they'll flatten out. If they're cruspy, they'll likely stay tacoed regardless.
Do me a favor though. Go to the app store and download the "Lux Light Meter" app, then tell me what your lux readings are at canopy height. The smart phone lux meters aren't super accurate, but should help give us an idea of where your at. I had someone test it against an actual lux meter and it was only a few thousand off, so while it isn't perfect, its a convenient way of seeing light intensity at different heights/areas
Tmurrayftw
Active Member
Its funny you say that I've already used it and it was around 30kThe leaves are telling you otherwise
Look at the picture you posted. ONLY the top leaves are thin and tacoing. The ones just below it are wide and perfectly fine... likely because they are further from the heat source. And im sure you'll notice that same trend if you look at the plant itself... the leaves at the bottom are fine, leaves up top are much thinner, and the ones at the very top are the ones tacoing.
Yes.. the "laser" thermometers are optimal for getting surface temperatures. But even if you don't have one, just move your lights up some and see what happens. If your at 18in now, id go up another 6in, give it a week and see what happens. If the leaves aren't brown/crispy they'll flatten out. If they're cruspy, they'll likely stay tacoed regardless.
Do me a favor though. Go to the app store and download the "Lux Light Meter" app, then tell me what your lux readings are at canopy height. The smart phone lux meters aren't super accurate, but should help give us an idea of where your at. I had someone test it against an actual lux meter and it was only a few thousand off, so while it isn't perfect, its a convenient way of seeing light intensity at different heights/areas
Tmurrayftw
Active Member
No i think that was before I moved them up it was somewhere around 20k
BluntMoniker
Well-Known Member
Damn.. then maybe we are wrong! Cus mine are at like 80-90k at the leaf surface but I dont have those issues at all. Hate to say that to ya, but id rather do what I can to help you fix your plant, than pretend I'm right if everything points to the opposite.
With that said though, there's nothing else I can think of that would cause this. And even looking around Google, growweedeasy, and other forums, heat stress is the only answer anyone else gives either, so im really stumped if thats genuinely not the issue
Aussieaceae
Well-Known Member
Overwatering + overfert, can look exactly the same as heat stress. Especially in combination with poor aeration, poor drainage, low ph and root disease.
Both heat / low humidity problems can look exactly the same, because the leaves are dry and crisp either way. Plus overwatering and overfert will only make it worse.
I'm not good at spotting pests. I do think you should look for mites really thoroughly. Especially in all the canoe shaped leaves.
Both heat / low humidity problems can look exactly the same, because the leaves are dry and crisp either way. Plus overwatering and overfert will only make it worse.
I'm not good at spotting pests. I do think you should look for mites really thoroughly. Especially in all the canoe shaped leaves.
Tmurrayftw
Active Member
Well maybe it is just a genetic defect in that particular plant because all the others in the twnt look beautiful
Tmurrayftw
Active Member
I appreciate you trying to help me diagnose my problem evryone has been awesome im gonna take some more pics when I get home
miracle gro... ? Sheesh lol
Tmurrayftw
Active Member
people have said over fert but what about a calcium
Thats what I was thinking im using humboldt secret and its been really good i don't feel like it has anything to do with whats going on with my plants
Star Dog
Well-Known Member
Is that the same as wheesht lol.
Raspberrykiwi
Well-Known Member
Your tips are curling up and burning off. You can see it without the lights off. Like I said, hard to tel with the blurple. But it’s most likely a toxicity and possibly light intensity. I’d say back off the nutes, flush if needed and raise your light.
Tmurrayftw
Active Member
It started doing it really bad after I over watered the other day they drooped down really bad came back up and started curling I had like 30% runoff I was worried I was going heavy on the nutes and my ppm was less than 1k which I found odd because its usually super high from the first runoff
Tmurrayftw
Active Member
Here are a few more pictures of the plant and the others next to it
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Raspberrykiwi
Well-Known Member
The dark green leaves show that it’s high in nitrogen. Here was mine before flower. You need to cut the N and give more P,K. Nitrogen will burn it up like that.
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I mean it could be a number of things. But my guess would be some type of deficiency. All most looks like possibly too much N. If you’re using anything with nitrogen higher than 2 through flower that’s probably your problem. Nitrogen is actually Initially toxic for plants in the flower stage.