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

[KonopCh]

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.

Did you do 4x 8L autos maybe? How much was yield?

 

[HemiSync]

Did you do 4x 8L autos maybe? How much was yield?

Sorry first time using the 8.5l pots and I’m using them with photo ladies.

 

[Hippy_BiotabsF70]

Hey mate, here’s some pics from my auto tent. They are Gorilla OG which in my experience is a strain that really doesn’t need much light, especially cob light. There are 4 in my 3x3 tent under 250w of cobs on full power (too much really). Just over 24 inches above canopy. It’s a short tent so I’m out of height!

This is what I would call HEAT stress or tacoing. The whole leaf is “folded up” down the centre like a taco. Another thing Gorilla OG tends to do even when not so hot in my experience.

And this is what I would call light stress. See the raised “fingers” down the edge of the leaf? If I turn the cobs down that will go. It’s only on a few leaves so I’ll leave things as they are.

Others will probably say I’m wrong, but I hope this helps in some way anyway dude [emoji106]

 

[lunarman]

Hey mate, here’s some pics from my auto tent. They are Gorilla OG which in my experience is a strain that really doesn’t need much light, especially cob light. There are 4 in my 3x3 tent under 250w of cobs on full power (too much really). Just over 24 inches above canopy. It’s a short tent so I’m out of height!

This is what I would call HEAT stress or tacoing. The whole leaf is “folded up” down the centre like a taco. Another thing Gorilla OG tends to do even when not so hot in my experience.

And this is what I would call light stress. See the raised “fingers” down the edge of the leaf? If I turn the cobs down that will go. It’s only on a few leaves so I’ll leave things as they are.

Others will probably say I’m wrong, but I hope this helps in some way anyway dude [emoji106]

Helps very much. Exactly what I was looking for. Thanks @Hippy_BiotabsF70

 

[bakEQuatorial]

Hey mate, here’s some pics from my auto tent. They are Gorilla OG which in my experience is a strain that really doesn’t need much light, especially cob light. There are 4 in my 3x3 tent under 250w of cobs on full power (too much really). Just over 24 inches above canopy. It’s a short tent so I’m out of height!

This is what I would call HEAT stress or tacoing. The whole leaf is “folded up” down the centre like a taco. Another thing Gorilla OG tends to do even when not so hot in my experience.

And this is what I would call light stress. See the raised “fingers” down the edge of the leaf? If I turn the cobs down that will go. It’s only on a few leaves so I’ll leave things as they are.

Others will probably say I’m wrong, but I hope this helps in some way anyway dude [emoji106]

I do the same. If its just a little bit, then just let them walk it off...lol


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[Hippy_BiotabsF70]

Helps very much. Exactly what I was looking for. Thanks @Hippy_BiotabsF70

No problemo mate.

 

[Olde School Player]

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.

lunarman, @KonopCh mentioned the cotton-like / white buds & I recalled a picture of this I'd taken for reference. This is a G-13 Labs Pineapple Express Auto I did last fall; was some damned fine smoke:

There's varying degrees of effect, and it's pretty difficult to actually have the plant show light stress under LED lighting. The pic above was taken about ten days before harvest, under a Mars Pro-II Cree-128, 325 watts-at-wall, hung at 13-14" above the plant canopy. The cotton-effect part of the bud was on one calyx finger only, near dead center under the light.
I've been known to push my plants, and this was an example of when to back off a little. I went to 16" to finish the bloom and the condition went away.​

If memory serves (sometimes it doesn't, killed a few brain cells in my earlier years ) you had stopped by another thread where I was conversing on a related topic; how light intensity affects plant growth. And your subsequent comment about this taking lots of patience to sort out is dead on!!! Sometimes the effects are so subtle as to go unnoticed, or chalked up to phenotype differences, or whatever. But my belief, and the intent of my light intensity thread, is to gather definitive evidence that higher light intensity generates much more compact growth. That can be put to good use by those with limited headroom. I also believe it results in better bud density for most strains. But for me, somewhere between too-much and not-enough, I believe we can encourage stretch during early growth to build a more robust plant structure, followed by a hardening / bulking up stage from early/mid bloom up to harvest. End result should be improved yield.

So if you haven't yet, do me a huge favor and start tracking your light height, and how your plants react by stretching (or not). Drop by my thread and report as your results are gathered. It will take me a couple of years to sort this out alone, but with the help of others it should be solvable in a couple of months.

Hope the pic helps a bit.

 

[lunarman]

lunarman, @KonopCh mentioned the cotton-like / white buds & I recalled a picture of this I'd taken for reference. This is a G-13 Labs Pineapple Express Auto I did last fall; was some damned fine smoke:

There's varying degrees of effect, and it's pretty difficult to actually have the plant show light stress under LED lighting. The pic above was taken about ten days before harvest, under a Mars Pro-II Cree-128, 325 watts-at-wall, hung at 13-14" above the plant canopy. The cotton-effect part of the bud was on one calyx finger only, near dead center under the light.
I've been known to push my plants, and this was an example of when to back off a little. I went to 16" to finish the bloom and the condition went away.​

If memory serves (sometimes it doesn't, killed a few brain cells in my earlier years ) you had stopped by another thread where I was conversing on a related topic; how light intensity affects plant growth. And your subsequent comment about this taking lots of patience to sort out is dead on!!! Sometimes the effects are so subtle as to go unnoticed, or chalked up to phenotype differences, or whatever. But my belief, and the intent of my light intensity thread, is to gather definitive evidence that higher light intensity generates much more compact growth. That can be put to good use by those with limited headroom. I also believe it results in better bud density for most strains. But for me, somewhere between too-much and not-enough, I believe we can encourage stretch during early growth to build a more robust plant structure, followed by a hardening / bulking up stage from early/mid bloom up to harvest. End result should be improved yield.

So if you haven't yet, do me a huge favor and start tracking your light height, and how your plants react by stretching (or not). Drop by my thread and report as your results are gathered. It will take me a couple of years to sort this out alone, but with the help of others it should be solvable in a couple of months.

Hope the pic helps a bit.

I just started 5 new ones. On day 10 now and just transitioned from the nursery (T5HO multi tube fixture over solo cups with seedlings) to autopots and autcobs at 32 inches. I'll pop over to your thread with updates on height vs stretching.

 

[Olde School Player]

Thanks bro, I appreciate it. Here's what I'm looking for, or any semblance close to this:

What is the breeder & strain
Watts per sq. ft. documented from wattage-at-the-wall of your light(s) with size and square footage of your grow area (size to identify odd shaped areas). If you use multiple lights, list each with a total wattage consumed.
Finished height or plant length. Difference being a measure of training effectiveness to final height. For example, if you took a 30” tall plant and brought her down to 12” with LST, then report total plant length at 30”. Remember, I want to measure stretch, more so than final plant height. The simplest method to measure stretch of a trained plant is with a string following the contour of the main trunk from base to tip.) Or if you did no training & allowed the plant to follow its natural form, report No Training and normal plant height.
And finally, the magic sauce –
What light heights did you maintain throughout veg, transition and bloom? Ranges fine, for example:
Veg – start @ 30”, down to 16”,
Transition – start @ 16”, down to 12” (I frequently skip this, feel free to as well)
Bloom –maintained at 12” throughout bloom.

 

[HemiSync]

Look at all the quality light stress I’m getting on these buds with the AutoCob 6 inches away with a reflector.

I wish I had a better camera, the trichs are wet and sparkling.