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I say if we can find high-powered class 2 LED's in IR (730nm) and UV-B (310-325nm) wavelengths, as well as 420nm,470nm,625nm,660nm,575nm, and make our own board, we will have a kickass LED growing light. I say make it approx 250-300 watts per light (ya thats like 2x the pyrocon).
Ya the plants look REALLY nice SnS. I think on some of your next grows you should experiment with IR and the whole Phytochrome FR and phytochrome R during flowering to reduce the nights. This is one advantage we can gain using LED's so I say if it helps, use it.Quote:
Originally Posted by SnSstealth
Red light is the most efficient monochromatic spectrum for plant growth. However, all the colors have functions. If a person were especially good at hearing bass sound, that means the other pitches should be emphasized, so that one could hear the whole melody. For light to be efficient for plant growth, it must be full spectrum with close to equal linearity and amplitude through the production of 400-700 nm, with a slight bump in the red.
One guys opinion, but real close to what I've been saying.
New Technology for Plant Lighting
good reading
thanks nole, i am interested in this how would we go about regulating the process? Its easy enough to get a IR LED light for CCTV systems but I dont know any other variables i.e. how long and when to run them(and if those are the right IR spectrum). How is it we could reduce the nights? it could be a big risk to mess with lighting times on a whole grow so i'd have to have a separate chamber.Quote:
Originally Posted by physicsnole
rofl nice one opie and keep the opinions coming it gets boring in here without themQuote:
Opieyutts
Nope. It's just like back in the early 1980's, when the government was performing all those gamma ray tests on us. Remember? When all those babies were born with 3 elbows and an overall olive green color?
Doughboy:smokin:
Physicsnole, Yes I have been researching from those exact nm. I have Many Componet's and order more every day!!!
MAN all the soldering and placement's of the group's.
Yes you are thinking in the right ball park. I'm using 10mm/four-way LED's/ with a mixing-spectrum program. Going to need a
robot, after all model's are stamp'd out.
Opie, Are you being (Felicitous), I know a invester!!! ME, MYSELF, and OH' YA, I. If you want to jump on the wagon, All-A'-Board!! Go check this out; (Way Down South, HATCH [email protected] . Don't Miss The Bus Guss!!. Later
Damn SnSstealth those plants are looking good. How old are they?
LED lighting is really great! Little expensive but is worth it in the long run. Check out the NEW FULL SPECTRUM LED GROW LIGHT it covers the same light growing spectrum as a HPS Lamp. www.UltraLEDLights.com
When I talked to them the said they would have them ready by the first of March. It will have the spectrum best for the flowering stage of growth.:thumbsup: I can't wait to try it, and I believe it will be less expensive than the UFO light and about 3 to 4 times larger. This type of lighting is getting better and better.
This is exactly what we are trying to avoid. The spectrum from a HPS light is inefficient. With LED's we can choose the best wavelengths with the greatest efficiency, 420nm, 470nm, 640nm, 660nm, 730nm, and UV-B.Quote:
Originally Posted by HelpingHand
The way I was going to control the different colors and mixing programs was with a microcontroller. With a microcontroller you could have set certain output pins (there are 28 in mine and each output pin can be a series of LED's) that control the changing colors (changing voltage) on a set time frame, like a calender.Quote:
Originally Posted by hatch
And why did you choose 10mm LED's? I found 5mm LED's to be pretty much the same brightness, however since 5mm are smaller you could have twice the LED's compared to 10mm. Just wondering. Also are you using drivers for the LED's?
Flower with shorter NightsQuote:
Originally Posted by SnSstealth
There are another pair of pigments involved in things here - phytochrome-R and Phytochrome-FR. Phyto-R is most sensitive at 660nm Red, while phyto-FR is most sensitive at about 730nm Far-Red, hence the R and FR naming (IE, JUST 735nm and very near wavelengths, but nothing under 710nm or so). With 735nm far-red/near-infrared emitters available then it's possible to flower cannabis with 15 hours 'daylight'. How? Why? Well, the plant senses that critical 12-hours-darkness that triggers flowering in cannabis because a critical amount of phytochrome-FR has slowly, naturally, reverted to phytochrome-R during the dark cycle. But during the 'day' 660nm red light converts the phyto-R into phyto-FR, while far-red 735nm light more slowly converts the phyto-FR back to phyto-R. So we run all lights for 15 hours, then run nothing but 735nm for another two hours and finally 7 hours darkness.- artificially driving much of the phyto-FR back to phyto-R without waiting 12 hours for the natural reversion- so you can actually flower with shorter nights.
That's 30% more light per day reaching the plant, the result is that we can pump 25%-30% more energy into the plant each day - that means 25%-30% more growth - during the flowering cycle. Pushing even longer is probably possible, with sufficient intensity of 735nm alone during some portion of the 'dark' cycle. Several experiments have already documented this effect.