Do you prefer quantum boards or strips?

V

viewer1020

Well-Known Member
cobshopgrow said:
diffuse light is the key
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This is consistent with a couple of articles I've seen which say diffuse light leads to better plant growth and yield:

www.greenhousegrower.com

Diffuse Lighting Offers Multiple Benefits

Growers are increasingly learning that steering the greenhouse climate, which includes the related factors of light levels, temperature and humidity, can
www.greenhousegrower.com www.greenhousegrower.com

www.growertalks.com

Diffuse Light for Better Plants

4/28/2014 Joli A. Hohenstein
www.growertalks.com www.growertalks.com

They're talking about diffusing sunlight, so there's not much concern about wasting energy. I think I've seen another article where they put a diffuser over an indoor light and got better results (not growing weed), but I didn't find it when I went looking today.

Strips or boards? In my micro grow, I pack DIY strips close together and cover the whole canopy from above. I drive the diodes relatively softly. I build strips because it's easier (reflowing something the size of a QB would not be fun without better equipment), and I pack them together like boards because I want to fill the space above the plants with emitters. I drive them softly because power costs are high, and I'm willing to spend extra on the build to maximise efficiency and useful lifespan.
 
Rocket Soul

Rocket Soul

Well-Known Member
cobshopgrow said:
spot on, well said.

penetration you get in first from many lightsources hiting your target from many angles.
penetrating a leaf doesnt really work well, to a certain degree yes, but even with reflected and bounced greenlight or some far red you hardly get the inteinsity youll need for a nice bud.
it shouldnt be hard to imagine.
a light photon travels without losses, the loss comes when its absorbed, by a plant leaf f.e or its reflected by the tent wall f.e.
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The problem with this penetration issue is that everybody isnt talking of the same thing: some (as you) define it as how much light gets into the lower cannopy. Some others define it as how far down into the cannopy you get decent buds, which isnt really the same thing.
 
cobshopgrow

cobshopgrow

Well-Known Member
ok, thats a point i havent considered, while to my view this is very related.
more light in the lower canopy is whats giving me fatter buds down below normally.
the analgoy from bugbee descirbes it for me well.
min 55.30 more diffused light, better penetration, more "flowers".
www.kisorganics.com

Episode 73: Quality vs. Quantity: Common misconceptions about grow lighting with Bruce Bugbee

My guest this week needs very little introduction. If you’ve ever studied lighting you’ve probably read some of his research. Bruce Bugbee is a professor at Utah State University and President of Apogee Instruments. He is internationally known for his work with NASA to design food production...
www.kisorganics.com www.kisorganics.com
 
Southernontariogrower

Southernontariogrower

Well-Known Member
ComfortCreator said:
The problem many have in discussing this is personal. If you own a setup you often want to protect your ego.

Those who understand cob design understand light penetration, and those who understand strip design understand spread.

Now you can cover your canopy with strips, run close and its awesome. Enough penetration to run a SCROG or SOG easily.

Cover you canopy with boards...you now have more options. You can run them gently, like strips, or run them hard, like cobs for penetration. Or anything in between.

This doesnt make boards better. They can be more flexible if you have enough of them. Yes, they can be run at 3 or 4 feet and at 1 foot or even less although that is not common.

Knowing what you want is most important. Vertical space is required for boards unless you can afford a lot of them for your space.

Thus...boards are the more flexible option offering both choices depending upon what you want to do. But most people will pick one or the other.
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Strips can be run hard too, my hydrotek blows my hps away imo spider type!
 
Southernontariogrower

Southernontariogrower

Well-Known Member
PJ Diaz said:
Before the LED revolution there were similar discussions of "penetration", although they were focused more around the idea of inverse square law and more intense HID lamps having better penetration, not so much about multiple light sources from many angles. I'm not saying that anyone's wrong, but it's worth noting that the goal posts seemingly have been moved.
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I still like hps mh mix, 600 or 1000 hps 400mh
 
C

ComfortCreator

Well-Known Member
PJ Diaz said:
Before the LED revolution there were similar discussions of "penetration", although they were focused more around the idea of inverse square law and more intense HID lamps having better penetration, not so much about multiple light sources from many angles. I'm not saying that anyone's wrong, but it's worth noting that the goal posts seemingly have been moved.
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I agree and think LED efficiency is so high now that it comes down to being able to cover most of the canopy with diodes and then vary the height and or wattage.

Some go further and have side lighting.

I dont think strip lighting is worse or better -- i think that the Spydr type designs and DIY are proven to be excellent. Boards and cobs too. They all can work equally well.
 
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