Ap0c0leS
Active Member
They work to an extent.
Dude to an extent nothing, Once again this is a classic example of a chinese light giving all LED's bad rep, by the way this plant actually isnt all that bad for a chinese light
LED grow
- Thread starter dimension 2350
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Dude to an extent nothing, Once again this is a classic example of a chinese light giving all LED's bad rep, by the way this plant actually isnt all that bad for a chinese light
milowerx96
Active Member
Wow that was classy. Dude was trying to answer your question and you harsh him like that? Weak. So hows the outside dirt floro grow going for ya. Have you been told not to post by RUI mods because you might mess up their revenue? I mean thats what you said about your " The Hippies Grow thread in post 144 right? You posted this right?
(I stopped the grow journal for this thread. I was contacted by a mod and was told " If you continue showing cheaper solutions you are gonna interfere with our advertisers grow supplies." I'm not gonna say who did it but it was done. For the record the pics were real. )
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We are all still waiting for those pics!
(I stopped the grow journal for this thread. I was contacted by a mod and was told " If you continue showing cheaper solutions you are gonna interfere with our advertisers grow supplies." I'm not gonna say who did it but it was done. For the record the pics were real. )
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We are all still waiting for those pics!
Up yours!
dimension 2350
New Member
It was about the eagles not him or his comment. The grow is going fine. No different then the hundreds I've done since the 80's.
saycheese
Member
there are so many things wrong with this post...
1) no LED yet can even produce above 35 lumens per watt. and considering cfl's are 60+ and hps are 100+
2) Lumens are not just relevant to "the naked eye" but exactly what plants use to photosynthesize. What kind of light do you think they use? I don't see you with a black light grow room?
3)Many people on this board will give you terrible opinions that are not based on fact but on hearsay and inexperience...
LIKE YOU!!! LOL there are probably only 2-3 people on these forums with any real knowledge. the rest of us simply emulate.
CaptainDastardly
Member
1) LEDs have an overall luminous efficacy rating of 10 to 150 lumens per watt. On the other hand, MH lights are at 65-115, and HPS are at 85-150. (Oddly enough LPS are at 100-200...but its not a useful spectrum)
2) Lumens can be important, but only so long as they apply to the appropriate spectrums of light. For instance...if you use that LPS light I mention above, you will end up with an asston of Lumens because it produces light withi the visible spectrum, but since the light is a monochromatic tone that is useless to plants all those lumens are useless for growing.
3) I have the a strange feeling the guy you are replying to knows what he is talking about.
...as a side 4th...if it wouldn't be an ignorant jerkish thing to do, I would almost assume you were posting just to troll the forums...but I'm sure you wouldn't do that.
saycheese
Member
Show me what LED has a 150 lumens per watt rating. In all the research I've done the best I've found are the Luxeon K2's and again those are at about 30-35 lumens per watt.
Theoretically there are more beneficial light spectrums than others but any visible light will provide some benefit. Name one study you have found with information supporting your conclusion about only certain visible light spectrums. There is a video on youtube comparing LED growth to HPS. They used a 630nm LED and it supposedly outperformed the HPS as a beneficial light spectrum. Since you think a monochromatic approach does not work then explain that video for us.
Lastly, may want to get those strange feelings checked out. Just because a person says something like its a fact doesn't mean it is. Yes, I'm a troll but seeing posts with absolutely no factual substance is disingenuous.
Canabuds
Member
White LEDs with about as many lumens / watt as the best HPS exist, they just are not economically feasible for a grow light at this point.
But lumens are a measurement that is biased for the human and has little to do with appropriate photosynthesis spectrums.
I am using a HydroGrow Led 126w light for flowering (3.5 weeks in) and things are looking great so far.
The thing that makes this light different is that is uses 60 degree LEDs to focus the light downward, as opposed to 120 degree. It has Reds, blues, white and a few IR leds (6 different bands i think).
LED panels emit less lumens than HID, but the beauty of it is that they only emit light spectrums most useful to the plant, so less watts can give better results.
With that said there are a whole lot of crappy LED products available that ain't worth sh!t for growing.
But lumens are a measurement that is biased for the human and has little to do with appropriate photosynthesis spectrums.
I am using a HydroGrow Led 126w light for flowering (3.5 weeks in) and things are looking great so far.
The thing that makes this light different is that is uses 60 degree LEDs to focus the light downward, as opposed to 120 degree. It has Reds, blues, white and a few IR leds (6 different bands i think).
LED panels emit less lumens than HID, but the beauty of it is that they only emit light spectrums most useful to the plant, so less watts can give better results.
With that said there are a whole lot of crappy LED products available that ain't worth sh!t for growing.