Lumens are for humans. Plants prefer more red green and white than just mostly white of hid. So your scale.....although a decent measure isn't accurate as even white LEDs crush hid in plant needing light
Was wondering how you made out w/ your build? That was a nice ceiling of light you have their. Gotta pic. Of the finished product?
With the comp. I referred, they offer the full spectrum, enhanced where it matters most.
It's my experience. And same as others. Don't remember the reasons but the plant needs more blue for veg and red for flower. But 3500k cobs seems to nail both.
actually plants like a broad spectrum of light from 410 to 690nm.seems the led crowd has always claimed that plant only need the light that LEDs can produce efficiently and do not need the light that LEDs can't produce efficiently. even some high end LED grow light makers claim that plants only need 3 bands (450,630,660nm) but the data does not support these claims.lumens give greater weight to green light. umoles give greater weight to red light. radiant power is the only measurement that is not adjusted for wavelength and radiant power in the 400-700nm range as well as a spectrum that comes close to the mccree curve is the best way to compare plant lights.LPS lights can produce over 190lumens per watt but they do a poor job of growing plants. CFLs produce less than 70 lumens per watt but many people have grown plant with them successfully.do your homework and educate yourself. do not rely on sales pitches and hype.a high CRI led will provide a better spectrum than HPS and the lower LPW rating does not represent lower efficiency. just a shift in the red peak from 590nm to 630nm. radiant power is the same for high CRI LEDs as for low CRI leds
cytochrome is a plant pigment that responds to blue light and instructs plant to use energy for leaf development (vegging) photochrome responds to red light and instructs plants to use energy for flowering in its excited state this pigment responds to darkness or IR light by reverting to it's resting state the ratio between pigments in these two states at "lights on" also stimulate flowering which is why light cycle is important.in theory a 3000k- 4000k high CRI diode supplemented with 430nm diodes should come close to matching the mccree curve' plants have close to 400 pigments and they all play a role in producing strong healthy plants.
Hello Sir,
Oh. I have the proof in my thread if you'd like to read some. It's all about the results my man. It was a very poor grow on my part w/ crappy plants but I used 1 , SE-450 in a 4'x4'.
That's so nice! Do you like it?
Yeah.... It's on a light mover. Moves for a 4.5 foot area by 6 foot area. So shouldn't be hot spots with the Stella's.
hm, u managed to got more gramms with amare se-450 in compare to 600watt hps. I believe that, but this is for sure no proof that amrae makes more light then a 600watt hps!
Not to be rude but Have you been following the thread? I just posted said lights spectrum. As far as I know there is no LED closer to the McCree curve or Photosythetic Action Spectrum.
It was my first LED grow. I assure you, it puts out more total light then a 600 watt HPS. I have all the par #'s n stuff. Not a PPFD but I have recorded results that have pictures of the plants in the 4'x4' growing very well on the edges.
I don't agree about the monos losing their effectiveness. I do agree that it works best over 18" though. They are HI-LEDs. I can talk more about this topic later. I'm installing my mini-split right now.
"HI LED" is nothing but a marketing term, does the light get down there? Sure it does.. Is it as affective at 24 inches as 18 inches? Highly doubt that, regardless wether amare chooses to use the catchphrase "HI-LED". It's common knowledge the farther from the canopy the light source is the less PPFD is supplied. My comments only relate to the effectiveness of mixing Lensed high wattage cobs with smaller monos .It really doesn't make a whole lot of sense, personally I would think reflectors would be a smarter option.
see this lumens line all the time lol.so if you have a 11,000 lumen blue cob and a 4500 lumen red cob you would choose the red one because it is better color for flowering? or maybe hps is a better example would you pick the 78,000 lumen hps or the 95,000 lumen hps if you could only use one lamp (600w) in your garden ?
see this lumens line all the time lol.so if you have a 11,000 lumen blue cob and a 4500 lumen red cob you would choose the red one because it is better color for flowering? or maybe hps is a better example would you pick the 78,000 lumen hps or the 95,000 lumen hps if you could only use one lamp (600w) in your garden ?
lumens are a big part of the equation because it tells us how much intensity the lamp has.but there is a difference between photons and plant usable photons .so spectrum is important
Yeah but lumens measures the spectrum we don't care so much about in the intensity we don't care so much about. But regardless more of any light is generally better.see this lumens line all the time lol.so if you have a 11,000 lumen blue cob and a 4500 lumen red cob you would choose the red one because it is better color for flowering? or maybe hps is a better example would you pick the 78,000 lumen hps or the 95,000 lumen hps if you could only use one lamp (600w) in your garden ?
lumens are a big part of the equation because it tells us how much intensity the lamp has.but there is a difference between photons and plant usable photons .so spectrum is important