50W Killer Setup GOD knows how many LUMENS!
- Thread starter tm21thc
- Start date
Hmmmm....
441.6 lumens per watt....
Maybe when they did their LUX test, they did it in a 1/4 meter room (instead of a 1square meter room?)? =) That would give more plausible results.
at 441.6 lumens per watt, that would be INSANE (I don't believe it) (maybe I'm stupid and I'm doing the conversions incorrectly?) =)
Those pic's show a date of 05.... During 05, research labs finally were able to produce LED's that produced 150 lumens per watt (I'm not even sure you can buy those comerically yet)?
At any rate, the only way to find out for sure is to TRY IT!!! =)
Be sure to post back in another couple weeks with a progress update! =)
Cheers,
-bwbig
441.6 lumens per watt....
Maybe when they did their LUX test, they did it in a 1/4 meter room (instead of a 1square meter room?)? =) That would give more plausible results.
at 441.6 lumens per watt, that would be INSANE (I don't believe it) (maybe I'm stupid and I'm doing the conversions incorrectly?) =)
Those pic's show a date of 05.... During 05, research labs finally were able to produce LED's that produced 150 lumens per watt (I'm not even sure you can buy those comerically yet)?
At any rate, the only way to find out for sure is to TRY IT!!! =)
Be sure to post back in another couple weeks with a progress update! =)
Cheers,
-bwbig
UVB LEDs can be purchased on Ebay or from an (online) electrical lighting supplier, 2 things though, you don't need them until you induce flowering (they make the plant create slightly more trichomes and expand the cannabinoid profile of the weed) and you can move those LED fixtures WAYYYYY close to those plants to keep them nice and short and allow them to absorb more light, remember light intensity is a inverse square law so it gets A LOT weaker the farther it is away, I'd say you can put the LEDs within a half inch of the babies, especially if you can't feel any heat from those fixtures.
420thAvenue
Well-Known Member
Expensive for a LED setup.
jackinthebox
Well-Known Member
Yeh man deffently get those LEDS closer to the plants, or you will be losing alot of the lumens. Closest you can get without burning them. This will give you best results. Also CFL can get close as well.
Also I would get a moisture meter, you said your watering everyday, that seems a bit much, but perhaps they need it, im not sure. Also those pots are kinda big to start off in, they will do though, but starting in smaller ones would have gave you a bigger root mass.
I hope everything goes good man : )
Also I would get a moisture meter, you said your watering everyday, that seems a bit much, but perhaps they need it, im not sure. Also those pots are kinda big to start off in, they will do though, but starting in smaller ones would have gave you a bigger root mass.
I hope everything goes good man : )
battosai
Well-Known Member
ok this shows how much people have researched. we all have opinions, whatever.
so here's what my research says:
lumens is how visible light is to humans. it doesnt mean anything to plants.
green leds of the same watt of blue will appear many many times brighter than the blue, bc green is in the dead center of max human vision. the blue is just as bright, it just doesnt appear that way to people. the plant is opposite. the dim blue and red glow of the led is brighter to them than the green light.
so why are hid's measured in lumens? bc 1 people dont know any better and 2 they werent originally measured with pot growers in mind. its for people to see.
so, if u have 1 watts of green, and 1 watt of blue, i think the lumen difference is somewhere between 100 and 600x. meaning 1 watt of green puts off 600 something lumens, 1 watt of blue would be like... 3 lumens. i dont really feel like looking up a chart, but u can find one with google.
also, uvb leds can burn your eyes and skin. so uh.. why is everyone just recommending them? a lot of non-led growers giving a lot of risky and b.s. led information.
you should check out "cogi's LED grow" on reefermanseeds.com as a starting point, then moving onward from there. its one of the best LED experiements with cannabis i've seen, including building setups and pictures of growing. unfortunately he lost his crop to root rot later on, but seeing his setup and read the material is great.
much love
your putting a lot more light on the plants than you think.
edit: heres some info
see how green looks way brighter to our eyes? HID have a lot of green output, which accounts for a lot of its lumen output. on this scale look at the bottom numbers between 420-470nm, and 620-740nm. these are the ranges that plants use best. it barely registers in our eyes. oh, and somewhere in the 500nm is a peak for beta carotine production.. we see pretty well in that. dunno if it matters much or at all in canabis
so here's what my research says:
lumens is how visible light is to humans. it doesnt mean anything to plants.
green leds of the same watt of blue will appear many many times brighter than the blue, bc green is in the dead center of max human vision. the blue is just as bright, it just doesnt appear that way to people. the plant is opposite. the dim blue and red glow of the led is brighter to them than the green light.
so why are hid's measured in lumens? bc 1 people dont know any better and 2 they werent originally measured with pot growers in mind. its for people to see.
so, if u have 1 watts of green, and 1 watt of blue, i think the lumen difference is somewhere between 100 and 600x. meaning 1 watt of green puts off 600 something lumens, 1 watt of blue would be like... 3 lumens. i dont really feel like looking up a chart, but u can find one with google.
also, uvb leds can burn your eyes and skin. so uh.. why is everyone just recommending them? a lot of non-led growers giving a lot of risky and b.s. led information.
you should check out "cogi's LED grow" on reefermanseeds.com as a starting point, then moving onward from there. its one of the best LED experiements with cannabis i've seen, including building setups and pictures of growing. unfortunately he lost his crop to root rot later on, but seeing his setup and read the material is great.
much love
your putting a lot more light on the plants than you think.
edit: heres some info
see how green looks way brighter to our eyes? HID have a lot of green output, which accounts for a lot of its lumen output. on this scale look at the bottom numbers between 420-470nm, and 620-740nm. these are the ranges that plants use best. it barely registers in our eyes. oh, and somewhere in the 500nm is a peak for beta carotine production.. we see pretty well in that. dunno if it matters much or at all in canabis
battosai
Well-Known Member
oh i didnt mention this.., just bc some light isnt as visible to our eyes, doesnt mean it can't hurt them. staring directly into a lot of blue or red LEDs can damage your eyes, even if it doesnt look that bright. kind of like staring at an eclipse. of course, uva or uvb leds will do this much more quickly. so always research before you experiment and be careful.
big article in my local paper today about how LED will soon replace CFL's. CFL's have mercury(?) in them. if you break one do not vacuum, sweep and dispose of in a wrapped bag. CFL's use a heated element to produce light, LED's use electrons. i think this is really going to change the world of growing. think how many people don't grow more because of electrical costs. if they get this dialed..........
Al B. Fuct
once had a dog named
Conspiracy to grow cannabis is probably penalised about the same as actually growing some. I don't think you'll actually be growing much with LEDs, so look up the conspiracy charges...
The LED makers' comparison photo of LEDs to MH is downright nefarious. There's no way on earth that's an accurate comparison.
420thAvenue
Well-Known Member
FUCKING AWESOME. I broke one of my CFLs today -OVER- my plants, I was trying to losen it so it would go off. Should I dispose of the plants?
Al B. Fuct
once had a dog named
CFLs contain mercury- turf the plants.
Al B. Fuct
once had a dog named
Someone ought to tell the local paper about the arsenic (gallium arsenide) and other evil heavy metals in LEDs.
Ain't no free lunch, man.
