re: LED GROW TEST. 126W hydro grow led VS. 180W
anyways heres the companys name i am going to test out Grow Led Hydro i know its funny both companys have the same name but backwards. they use 9 spectrums and use 3w leds instead of 1w like PS & HGL.
this is going to be a weird test since evey companys claims that the 3w led arnt better then the 3 one watts leds. but this company claims the 3w is the way to go.
I'll make my comment and then turn the thread back to you Irish
9 spectra, yet red, orange, yellow, green, blue, indigo, and violet are what we are taught in school, and that's only 7. They state they don't use green, so where are the extra 3 spectra? And why would you want 9 spectra anyways? Doesn't that kind of get away from pinpoint accuracy that makes LED's so viable? 9-band is probably what they mean to say, but even then my previous comment still stands.
Since you decided to list the company, this means I get to dissect them SCIENTIFICALLY, and realistically online. This has nothing to do with opinion, and by now Irish you should know a thing or two about claims lol.
So I'll start with the 3W LED argument. I don't need to "claim" anything, since I always back up my statements on this subject with data. I've posted this many times before, but here it goes again (feel free to call Cree or Luxeon to verify my statements):
1W LED's are the most efficient light sources when it comes to lumens per watt. 1W LED's have the same amount of "light energy" as a 3W, meaning that there is no difference between the two on how far they can carry light energy (penetrate). Now here come the facts:
Sent by Bernie Eshel at Cree:
"Hi Cammie
It was nice speaking with you on the phone earlier. Below are some ideas on the costs for the more cost effective LED solutions from Cree.
XRE RED 40 lumens MIN
All ratings are at 350mA
700mA you can multiply by 1.72
B"
1W: ::: Edison Opto - Products :::
3W: ::: Edison Opto - Products :::
Now, look at the first LED on each link: 620nm~630nm. For 1W, your output is 45lm at 350mA. For 3W, your output is 80lm at 700mA. Now, I trust Cree to tell me the correct multiplier, so let's take our 1W and ramp it up to 700mA. 45lm x 1.72 = 77.4lm. So, even if we leave the 1W LED's at 350mA, 3 of them still come out to 135 lumens, which is 41% more output than the single 3W at 80. So do you want to trust claims or data?
MOVING ON: Coverage Area
This company claims that they use 60 degree LED's (hmm, wonder where that came from lol). They also use the same casings as I do: 126W and 318W, they simply load 300W into the 126W panel and 600W into the 318W panel. Irish, you've already stated elsewhere (and maybe here) that our unit is dead on with the 2' x 3' coverage area listed for our 126W. That's 2' from the 12.5" section, and 3' from the 19.5" section. Keep that in mind for what's coming up.
The company you referred to lists a 6' x 8' coverage area for their 300W light, with 6' x 4' for "core saturation" (meaning that bright spot from the light). Our light using the exact same casing, and 60 degree LED's has a "core saturation" area of 18" x 30", so how in the world can you create a light with literally 3x the coverage area, when you have the same space limitations and angle limitations as us? It's not possible. The company proves this by contradicting themselves on their own page. When you look at their 600W light, it states the core saturation area as 6' x 8'... So how is it that the core saturation area just expanded another 2 feet width-wise, when the 600W and 300W casings are the exact same width? Scientifically their ratings are false.
MOVING ON: Spectrum
Like I covered above, if using 9 spectra without the color green (which is scientifically impossible) then you're operating the unit like a HID or MH, instead of pinpointing the light wavelengths. We know plants absorb blue and red light most efficiently. We also know that orange has little to no benefit on plant development (in my testing it actually caused issues with my plants like leaf curling, dying, etc... when placed too close). This company refuses (like so many others) to post the nm's they use in their product, they just want to you trust them on it
Here is what they do give you though (which also disproves the whole 9 spectrum thing) on their site:
When I saw this graph (with 6 points, not 9), it reminded me of another company I came across a while ago:
Growitled.com - LED Grow Lights Red, Blue Tri-Band Spectrum design. Newest technology available. , as they use very similar specs. The specs they list are 730nm, 660nm, 630nm, 612nm, 462nm, and 420nm. Even without these specs (just by looking at their chart) you can tell they use a 660nm, 620-630nm (too close to orange to be 640), 612nm, 420nm, ~440nm, and 460-470nm, which is still only 6 points and 4 spectra (violet, blue, orange, red). So, where are the 3 that are missing?
MOVING ON: Warranty
Direct quote from website: "The Content included in this Web site has been compiled from a variety of sources and is subject to change without notice as are any products, programs, offerings, or technical information described in this Web site. Growledhydro.com, LLC. makes no representation or warranty whatsoever regarding the completeness, quality, or adequacy of the Web site or Content, or the suitability, functionality, or operation of this Web site or its Content. By using this Web site, you assume the risk that the Content on this Web site may be inaccurate, incomplete, offensive, or may not meet your needs and requirements. Growledhydro.com LLC. SPECIFICALLY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT WITH RESPECT TO THESE WEB PAGES AND CONTENT. IN NO EVENT WILL Growledhydro.com, LLC. BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES EVEN IF COMPANY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES." (by the way, some of that info they stated they "compiled" from other sources, was from my site)
FINAL POINT:
So in the end, claims are simply claims. I don't need to test against their light to know where it stands scientifically, as I've already pointed the information out. So anyone can make a claim, but how many people do you see out there like me backing it up every chance they get?
