Now 2 of them turning their leaves sideways.

W

wallywonks

Well-Known Member
I've even lowered the light to 50% power to help reduce heat cause of our heatwave. 81F and the canopy has fan blowing over top.

Just really strange
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Weedoguido

Weedoguido

Well-Known Member
I'd like to know as well, if it still doing it I have one with the leaf stem completely twisted one whole twist. It may keep twisting more on you, pay attention and get some pics cause I have not taken any of mine yet.
 
Weedoguido

Weedoguido

Well-Known Member
hotrodharley said:
Too much light. Vegging plants don’t need a lot of light. Suggest buying a quantum PAR meter and reading up on PPFD.
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What would your second choice be? I was using t5's to veg them about 12" above the canopy. I'm thinking they should suck up any light from a flouresent and not hide from it. What you think?
 
W

wallywonks

Well-Known Member
hotrodharley said:
Too much light. Vegging plants don’t need a lot of light. Suggest buying a quantum PAR meter and reading up on PPFD.
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Its strange cause a couple hours earlier they were praying to the light gods then did that. They went from just flat when I got home to praying then turning sideways. Before I went to work today I checked them and her leaves went back to normal but was droopy cause she was sleeping.

The one plant that leaf isn't underneath the light so she's not getting the full 50% power on the outside perimeter. So I was thinking it can't be lighting. It's 24" above which is 6" above manufacturers suggested height.

Mars Hydro suggests for Veg 18" plus 5" for TS series and 50 to 75% on the dimmer.
 
hotrodharley

hotrodharley

Well-Known Member
wallywonks said:
Its strange cause a couple hours earlier they were praying to the light gods then did that. They went from just flat when I got home to praying then turning sideways. Before I went to work today I checked them and her leaves went back to normal but was droopy cause she was sleeping.

The one plant that leaf isn't underneath the light so she's not getting the full 50% power on the outside perimeter. So I was thinking it can't be lighting. It's 24" above which is 6" above manufacturers suggested height.

Mars Hydro suggests for Veg 18" plus 5" for TS series and 50 to 75% on the dimmer.
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Praying can also be light avoidance. As they turn to minimize surface area. But you best listen to the cannabis growers at Mars. Lol.
 
W

wallywonks

Well-Known Member
hotrodharley said:
Praying can also be light avoidance. As they turn to minimize surface area. But you best listen to the cannabis growers at Mars. Lol.
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I just follow their guidelines. I understand it's not the correct guidance for all strains. But they know they sell their lights to many cannabis growers so they at least have a baseline.

I ran the last 2 grows basically the same with the lights. In veg dimmer set between 50 and 75%. Lights about 24". In flower last grow had it 15" from the canopy cause i ran out of ceiling because of the DWC kush plant. Seemed around 60 to 65% was the sweet spot. I know they like blue spectrum in veg so the full spectrum is probably hitting them hard. I always thought light and heat stress signs were bleaching of the top leaves and the leaves canoeing like a taco.

I can lower the dimmer to 40% see if they keep doing it.
 
hotrodharley

hotrodharley

Well-Known Member
wallywonks said:
I just follow their guidelines. I understand it's not the correct guidance for all strains. But they know they sell their lights to many cannabis growers so they at least have a baseline.

I ran the last 2 grows basically the same with the lights. In veg dimmer set between 50 and 75%. Lights about 24". In flower last grow had it 15" from the canopy cause i ran out of ceiling because of the DWC kush plant. Seemed around 60 to 65% was the sweet spot. I know they like blue spectrum in veg so the full spectrum is probably hitting them hard. I always thought light and heat stress signs were bleaching of the top leaves and the leaves canoeing like a taco.

I can lower the dimmer to 40% see if they keep doing it.
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I run a cheap 640 watt LED and in veg I run no more than 500 PPFD. Strongly recommend a quantum PAR meter for anyone using LED. Less than $200. Rechargeable. Indispensable.
 
Rurumo

Rurumo

Well-Known Member
50% at 24 to 30 inches should be fine in veg. But Hotrod is right, using a meter you can dial in your light and reproduce good results.
 
hotrodharley

hotrodharley

Well-Known Member
StareCase said:
$200 for a PAR meter is a really good price considering they were 2 or 3 times that a couple of years ago. Any brand(s) that you recommend?
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Mine is a Hydrofarm type. Checked against my neighbor’s expensive Apogee and within 15 PPFD high or low at full power and half power under 3 different lights.
 
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