Lighting Anyone got any pictures of autocob light stress in action?

[lunarman]

I'd love to see what light stress looks like with autocobs. Like when you have too much light on a plant (e.g. two fixtures on one plant) or you get too close to the plant. I have played around with two lights, one light, close, far. I can't tell any frigging difference. But I'd like to recognize it if its there. So if anyone has a picture or can describe it that would be good.

I have read on the net that plants praying up to the lights is a sign of too much light, but is that true?

And I've read about cupping but I think that is more related to heat.

I do have a lot of fan circulation and maintain good temps so I don't have heat stress. So maybe that is why I don't see light stress even thought it might be there.

 

[AutoWonders]

For the most part my leaves canoe. Right now a test that I am running is proving out that using the reflector for veg is good thing. I'm gonna run one more test next run with a couple supers, see how the reflectors do for veg again etc. Current test reflector temp is only about 1 degree warmer at canopy.

 

[lunarman]

For the most part my leaves canoe. Right now a test that I am running is proving out that using the reflector for veg is good thing. I'm gonna run one more test next run with a couple supers, see how the reflectors do for veg again etc. Current test reflector temp is only about 1 degree warmer at canopy.

Got any pictures of a canoed leaf?

I could have sworn that @BigSm0 stated once that you can't really see light stress. But he finds he gets better frost or yield if he backs off the lights. That would take a lot of patience to prove out. Weeks of A vs B.

 

[Hippy_BiotabsF70]

Got any pictures of a canoed leaf?

I could have sworn that @BigSm0 stated once that you can't really see light stress. But he finds he gets better frost or yield if he backs off the lights. That would take a lot of patience to prove out. Weeks of A vs B.

Raised fingers on leaf edges mate. Quite obvious when you see it. You can definitely see it in my opinion.

I think certain strains prefer less light and some want more. Sm0 grows lots of Gorilla OG I believe and that’s a strain that needs less light than most in my experience. I have 3 going at the moment and have done a couple before, and they have the least requirement for light of any strain I’ve grown so far. It’s about DLi I believe.

 

[BigSm0]

I just got done checking someone’s pics who thought they also had light stress. It turned out to be a nutrient issue which most plant problems usually are. If the top leaves are yellow or burnt and the lowers are green and healthy then that’s light stress.

I actually had leaves half yellow and half green in the past. The green was being covered by above leaves. You could clearly see the leaves exposed to the light was cooking them. This was also done at 30 inches away with 460 watts over a 4x4 space. There were also reflectors on the cobs too. Light stress is very easy to diagnose.

 

[Hippy_BiotabsF70]

I just got done checking someone’s pics who thought they also had light stress. It turned out to be a nutrient issue which most plant problems usually are. If the top leaves are yellow or burnt and the lowers are green and healthy then that’s light stress.

I actually had leaves half yellow and half green in the past. The green was being covered by above leaves. You could clearly see the leaves exposed to the light was cooking them. This was also done at 30 inches away with 460 watts over a 4x4 space. There were also reflectors on the cobs too. Light stress is very easy to diagnose.

Not light stress in my opinion. Thats light BURN.

Put the lights too close and the fingers on the leaf edges raise up. Raise the light and the leaf fingers flatten. I call that light stress.

 

[KonopCh]

I think light stress can be tacoing, but can also be high temps. Light burn is yellowing of leaves and "white" buds like cotton.
Either way, better start low and slowly increasing those photons.

 

[HemiSync]

Currently running 300w of cob light in my 3x3 and last time I moved the lights down it was to 24 inches above the canopy. Now the ladies have grown to within 22 inches and seem to be liking it.

 

[KonopCh]

@HemiSync those are 15L or 8L pots?

 

[HemiSync]

@HemiSync those are 15L or 8L pots?

Those are the 8, I only put two 15l in there when I use them. I’m thinking four 8l might be too much if you let them veg longer.