25% more yield with a diffused LED ?

[GoatCheese]

Sure, but the heat won’t go to waste cause i use it to warm up my tent and cabs. I’d like my Sammie veg lights to run warmer than they’re doing now, actually.

Humidity is a PIA to keep up during winters over here when it’s -10 to -20+ C degrees for 3-4 months and humidity in my apartment is around 20-25% , so extra warmth from the grow lights is welcome. I have to use a timer on my tents exhaust 10 months of the year to keep temps and humidity up, other wise COBs would be a nightmare to use cause the room air is so dry already alot of time here in the north.

 

[Three Berries]

Sure, but the heat won’t go to waste cause i use it to warm up my tent and cabs. I’d like my Sammie veg lights to run warmer than they’re doing now, actually.

Humidity is a PIA to keep up during winters over here when it’s -10 to -20+ C degrees for 3-4 months and humidity in my apartment is around 20-25% , so extra warmth from the grow lights is welcome. I have to use a timer on my tents exhaust 10 months of the year to keep temps and humidity up, other wise COBs would be a nightmare to use cause the room air is so dry already alot of time here in the north.

I use an open flame/not vented propane heater. It provides plenty of CO2 and quite a bit of humidity to the air.

 

[Kimes]

Spending 10-50 bucks on diffuser material is cheaper and easier than a light mover system for most of us home growers

This. And how on earth I´m supposed to use a light mover in a 2x4 tent with a 2x4 bar led fixture.. (def see benefit in larger setups..)

 

[FranJan]

This. And how on earth I´m supposed to use a light mover in a 2x4 tent with a 2x4 bar led fixture.. (def see benefit in larger setups..)

Rewire and use a sequencer and your panel doesn't have to move. At least that's what I keep thinking when looking at my Iluminar i8 ePAR. I guess it depends on what system you have and how bad you want to void your warranty but IMHO these light bars are perfect for sequencing on and off and emulating a light mover. Probably could pulse boards/COBs to emulate a mover too.

This diffusion/lower output thread is a very interesting topic to me because I just flowered a plant, (Grandpa Larry), under 400~500 PPFD, (according to PPFD Meter running on my Note10), and while it's not gonna break any weight records it's shocking how well it grew and how dense the flowers are. Now that PPFD reading isn't very real world since I'm running an ePAR system and I don't think the sensor on the phone reads the extra spectra but the output can't be any more than 10 to 12% more, maybe 20% tops but even then that is such a low PPFD/DLI for flowering I would think the density wouldn't be there or it wouldn't be fully matured. Plant smell amazing and it's almost completely collapsed under the weight of it's flowers.

I always thought that the light coming out of the tent did what it does because of wave-particle theory.

 

[Kimes]

Rewire and use a sequencer and your panel doesn't have to move. At least that's what I keep thinking when looking at my Iluminar i8 ePAR. I guess it depends on what system you have and how bad you want to void your warranty but IMHO these light bars are perfect for sequencing on and off and emulating a light mover. Probably could pulse boards/COBs to emulate a mover too.

This diffusion/lower output thread is a very interesting topic to me because I just flowered a plant, (Grandpa Larry), under 400~500 PPFD, (according to PPFD Meter running on my Note10), and while it's not gonna break any weight records it's shocking how well it grew and how dense the flowers are. Now that PPFD reading isn't very real world since I'm running an ePAR system and I don't think the sensor on the phone reads the extra spectra but the output can't be any more than 10 to 12% more, maybe 20% tops but even then that is such a low PPFD/DLI for flowering I would think the density wouldn't be there or it wouldn't be fully matured. Plant smell amazing and it's almost completely collapsed under the weight of it's flowers.
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I always thought that the light coming out of the tent did what it does because of wave-particle theory.
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Interesting info. A sequencer eh? That girl looks stunning, absolutely stunning!!!

 

[Koondense]

Wave-particle duality is not the reason for the patterns but many light sources is.
Also to observe the phenomenon you need lasers and very narrow regulating slits, stuff that is usually found in labs.
I did some of these experiments, they are very interesting for sure.

Cheers

 

[Ca++]

I don't think light is a wave, like on the ocean. Which the slits represent. If we put an observer at certain positions there, the wavelength is altered enough to make the light invisible. We don't see any colour shift at all though. We have 660 leds putting 660 on the floor.
Further to this, waves have that strong physical interaction as solid bodies. Light however can travel together from the sun, then defract giving us a rainbow.
It doesn't really fit the waves analogy. Though it doesn't fit the particles one either. The particles one works for us, as we try to take a snapshot in time and break it down into manageable parts. Ending with conversation about particles. It just suits our time-frame though. It's a stream of something

 

[Koondense]

Quantum physics disagrees with most opinions.
Experiments are tools for uncovering truths, opinions are just opinions.
Cheers

 

[Ca++]

The light movement we might need, is probably on an almost quantum dimension. Just vibrating the light might do it, but we can't as thermal failure would come sooner. However we could rock a light suspended on just two wires, by moving a weight about. Something like a microwave turntable motor with weighted arm attached. These motors have internal gearbox, so it's just a part.

I posted this while my new account was under review. Not sure why it didn't get allowed. Might of been the vibrator I pictured. You can have a think about that.

 

[goingrey]

The light movement we might need, is probably on an almost quantum dimension. Just vibrating the light might do it, but we can't as thermal failure would come sooner. However we could rock a light suspended on just two wires, by moving a weight about. Something like a microwave turntable motor with weighted arm attached. These motors have internal gearbox, so it's just a part.

I posted this while my new account was under review. Not sure why it didn't get allowed. Might of been the vibrator I pictured. You can have a think about that.

What if you vibrate the light by having a fan blow towards it?

 

[Ca++]

I think most peoples lights are moving because of this already. Not that you can see, but to a degree. As this is almost a quantum mechanics discussion, the degree of movement needed is itself up for debate. It's not even established that movement will do anything at all. It's worth looking at though.

What if you vibrate the light by having a fan blow towards it

I was just reading an article where they claimed light bleaching is not really related to light levels, but more the spectrum. They were up to 2500umol and no problems with red proportioned to the other colours, as sunlight might. However with red at 60% they saw bleaching as low as 800umol. Looking at the floor, it's easy to see more than 60% red on some parts.

They said the red light was knocking electrons from the outer valances of the green pigment, faster than they were put back. Leading to collapse. This is just one of many problems when a particular colour is outstanding though. Chief Bugbee was talking about 40% blue at most, iirc. Regarding results not process. This 'nothing outstanding' approach is why we are adding green. Every colour does something, so add them all. It's what plants evolved with.

Where a plant is exposed to too much of one colour, it's pretty established the plant won't be happy. It's not seen to be instant, but rather an erosive effect. It's seen on whole plants, not areas, but I think that's mute. We can flower a branch.

I think rocking the light might be a decent experiment. We have seen the extent to which the Red is painting areas of the floor. We need to move the light beams a few inches, or find a grow that used plant turners to study. I saw someone buy some recently. I'm not sure what happened to the storyline.


A plant turner, on top of a 120x120 light, with a weight on the turner, placed off center... That would be easy for most people to get the light rocking. With a degree of adjustment gained from changing the weight.

 

[GoatCheese]

How about those diffusers all you movers and shakers, ay.

 

[Ca++]

It's just my personal ideals, but the idea of loosing light.. I just can't help thinking there is a better way. However, if I have 660s painting red spots on the walls, I have to consider if I buggered my lighting choice. Limiting the ppfd I can reach, and doing untold harm getting there. Perhaps diffusing the situation is the way to go.

Incidentally, excess red usually shows as lighter tops as we approach the point where bleaching will follow. It is in fact mild even bleaching, that looks like a deficiency. It's not heat bleaching where the parts nearest the lamp show strongly. It's the canopy in general. It follows, that with red spots, we would see a rather random distribution of this. Though the fact I have seen spots, still doesn't quite convince me they should be there.

 

[goingrey]

How about those diffusers all you movers and shakers, ay.

10W E27 plant light from the hardware store came with one.

 

[Koondense]

What if instead of moving the light, we move the plants?
Like the wind does make the leaves move a bit...

 

[exploziv]

I would rather dim my leds or move them further away than cover them with something. Even thin, transparent glass takes some percents of the lumens.

 

[Three Berries]

How about AC LEDs and varying the input frequency?????

AC LED vs. DC LED | Global Lighting Forum

LEDs are DC-driven devices. An AC LED is an integrated assembly of the LED emitter and the LED driver. The choice between AC LED and DC LED depends on the application.

www.manufacturer.lighting

 

[GMT]

I was only joking in my post, for the interference pattern to mean anything, you'd have to be firing your photons one at a time.

 

[growshopfrank]

What if instead of moving the light, we move the plants?
Like the wind does make the leaves move a bit...

That is an option but usually the light fixture is smaller/lighter so the path of least resistance is moving the light.

 

[growshopfrank]

Spending 10-50 bucks on diffuser material is cheaper and easier than a light mover system for most of us home growers

Following that line of reasoning dimming them down would do the same and provided that your fixture is dimmable that would be free