captainmorgan
Well-Known Member
Top right area of the LED section page is a button.
Think ive been led astray
- Thread starter leds420
- Start date
Stephenj37826
Well-Known Member
This is true and although I wouldn't calculate it into gpw. I would look at it as a cost saver. The reason being is in winter of course your ac will use less kwh than in summer get my drift.
BM9AGS
Well-Known Member
Yes of course. As we led users may need heating in the winter
I'm just wanting an established fair system in place. If general consensus is Light Watt pull divided by grams then good. But there are so many interpretations of GPW I'd like to see a standard stickies somewhere so we're all on the same page.
I had no clue guys were getting 2 GPW as last I read supraspl got 1.4 something off one of his Cree grows.
And of course I know they're many factors in place but if we had a thread of averaged GPW of light then people could read it and see Mars 2 average is shit your Crees are the bomb and hid isn't so great.
OneHitDone
Well-Known Member
Yep, lots of # fudging going on.
How many grams of quality marketable nugs per sq ft is more accurate.
Then, how much total juice did it take to get there. Not just light consumption
Abiqua
Well-Known Member
I have been thinking of using something along the lines of Grams/ Par W/ per KWH to relate my small space size and possibly eliminate a variable [amount of PPFD] when comparing to larger wattage grows....strain will always be a variable that can quickly fuck this relationship up imho, but its a compromise at this point
I mean out of 3-4 strains in perpetual, it is hard to get a read of what actual mean clearly is....I could take my blackb kush that yields actually fairly puny to the lemon diesel/bbk cuts..and use those only and have a terrible average, probably something like .8 grams/watt...but one of the pheno's that has been very prevalent so far also finishes before 50 days at times....The diesel/bbk cut at this point if being averaged could have yielded me something in the neighborhood of 1.4-.5 grams/watt....but considering a yield of 16.5 grams that would be somewhere in the avenue of 11 overall watts [out of 122 and 730ish ppfd] and at 43ish% efficiency.
A weighted average using multiple random pheno's of 3-4 cuts, has put me into the 1.1-1.2 grams per watt average, but again only using 122 watts...
Or how about: yield / [Par Watts per/sq ft]./ KHW
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OneHitDone
Well-Known Member
With all this PAR # talk going on, anyone have thoughts on this?
Stephenj37826
Well-Known Member
No one said par was perfect. It counts green light as well. It actually didn't take red into account enough. That bring said most t5s have alot of green. Power veg has alot of uv and like I said the deeper reds aren't quite accounted for correctly. Apogee Gives us a way to calculte in the deeper reds. I never did like the way 6500k vegged my plants. I always used warm 5000k and 3000k mixed.
I agree with you there dude. Brendon is not the most likeable guy and that's just from the videos. I've heard that he doesn't treat unhappy customers very nicely either. I almost bought 2 lights from him though, but DIY is the way to go for sure if you have the skills. It doesn't seem overly complicated but some of us never ran a wire and diy is out of the question for some. And there's so much real garbage out there. Everyone makes an led grow light now and probably 98% of them suck big time. I am a newby here and don't want to step on anyone's toes bro. I know that led has arrived and is the future and whenever I saw everyone talking about "look, my a.c. is collecting dust" I was ready, but I always sleep on it and when I woke up, it was diy time.=
When Heliospectra charges a premium for their lights it's because they have expertise and knowledge in the horticultural sciences. When PLC charges what they do for a COB based panel you know you're getting some real world practical experience that was used to design and build that light. What do you get with SK? Sales pitches, arrogance and while they are backed by a company that knows lighting it doesn't mean they know how to grow weed. Even their latest creation is a mystery. Nice choice of LEDs but are they properly matched up? Do the XP reds accentuate the grow or are they wasted? MKR's are very energetic and you may have to hang that light so far away from your plant the reds may not be contributing to the grow. Do you think SK thought about this or just built something cause they got a good deal on LEDs from their parent company? I'm excited to see the new SK in action but again it's a warehouse light, and while history has taught us warehouse lights can grow weed, does SK have the right to charge so much money for a product that they probably have no more knowledge about then many folks on this website? I say no and if they lowered their prices, then they might be onto something.
Also many of these people here are united to keep LED salespeople from taking advantage of them and others. SK came in with a know-it-all attitude and bunch of bullshit. Not a good way to introduce yourself to folks around here. Especially the one's who know what they are talking about. Like captainmorgan,
Hey @captainmorgan , hope you're feelin' well and are getting ready for the winter. Didn't I warn you about caring around here? Let 'em buy 20 at a time sir
! Hell man, everything on YouTube and the Internet is the truth. Just like TV. There's no foolin' these "kids" today!
Anyone having fun any more? If your plants are ready to flower when you are, they grew just fast enough.
so person a and b using the same light. person a lives in the desert and needs ac, person b not. both produce the same amount of product, but one uses a lot more power. how is that helpful in judging the quality of the light?
OneHitDone
Well-Known Member
I never said person a and b in different locations.
Person a tries light x and z. z may cost more to run yields way more in the given square ft - win!
cdgmoney250
Well-Known Member
Nice. I haven't seen this light yet. Seems pretty legit in terms of build quality. Is there thread on that grow by chance?
Unfortunately the price of the largest unit is $950 for a 150w fixture. If the yield GPW is similar between the Zelion and the SK, the Osram would cost more that 2x the cost of the SK to achieve similar yields.
Is Apache Tech not a happening thing anymore?
Black Dogs are a complete ripoff but they are still really popular for some reason. What other up and coming LED companies (that are out and available for anyone to use) would give the SK a run for its money knowing what kind of numbers it puts out?
Actually the NEXT LIGHT LED puts out pretty similar numbers to SK (maybe even slightly better) and has a very similar price point using about an extra 100w. Is there a general consensus on this light? Is it another shitty product put out by a dishonest company or is it a legitimate lamp?
BM9AGS
Well-Known Member
Hello
I'm very weary of putting any belief in to some of these companies using epistar and other crap LEDs as their whole operation is complete BS. I don't know much about SK or AT or BD but if I take a second on BDs site or SKs site I close it quickly because they have hearty wording and subjective opinions and remind me of the propaganda masters advanced platinum. Also no clue on next light led too but statistically it's more of the same.
Quick test on a junk light for me is go to their site and look at the wording. If it's very wordy likely it's junk. Also if they have all flawless reviews there's something Amis because in our society you can be gifted a Lamborghini and complain. Also, to generalize most people who smoke weed and thus buy lighting for growing do not pay attention to grammar therefor if the reviews all have well written high marks with no errors then I call total BS. Ya feelin me?
The Osram Zelion HL is in my mind very legit but a $100 used 1000w HPS would produce more with out question. I like Effiency. It's a valuable measure of progress for me.
Edit: regardless of how shitty the light is you'll still grow something. With the eBay specials you could grow an amazing plant using 10kw worth of them for sure!!!
FranJan
Well-Known Member
http://www.cree.com/LED-Components-and-Modules/Tools-and-Support/LEDs-Branding-Program/Agricultural
No, they are the only "Agricultural" company that has applied for permission to use CREE's trademark and copyrights in a limited way through the "Cree LEDs Branding Partner" program . It's marketing to me and doesn't mean dick really IMO. What do you get besides a "guarantee" they use CREE? I mean what is CREE doing for them? They're just putting a link on CREEs website and then telling the company 50 ways to Sunday how to use CREEs logo. SK probably had to ask to use the word "exclusive". Hmmm maybe I should check with CREE to see if they're in code? LOL SK is just standing on the shoulders of a giant here.
http://www.cree.com/~/media/Files/Cree/Legal/Cree Ingredient Brand Style Guide.pdf
I'd just tell everyone my company uses CREE.
captainmorgan
Well-Known Member
And unless I missed it on there site,they don't say which Cree LEDs they use or what bin. That can make a huge difference in performance and efficiency.
OneHitDone
Well-Known Member
Ok, enough SK bashing.
Who here on these forums is gonna pony up and grab one and do an unbiased run with it?
Who here on these forums is gonna pony up and grab one and do an unbiased run with it?
captainmorgan
Well-Known Member
Just putting up facts and why would I want pay that much for a light that can be out performed by other lights that sell for less.
OneHitDone
Well-Known Member
In your opinion, will 4 A51 W90's out yield the Spectrum King 400+?
captainmorgan
Well-Known Member
I've used the top bin Cree CXA3070 COB's for about a year and a half and the new A51 light uses COB's that are very close in performance to my 3070's so yes the A51 light will out do SK watt for watt.
BM9AGS
Well-Known Member
If SK is not saying specifically what series and model they're using its because it's nothing to brag about.
Buy this $2k light instead. At least they make a cool looking BS light
http://quantumfluxledsystems.com/gls-led-grow-system/
Buy this $2k light instead. At least they make a cool looking BS light
http://quantumfluxledsystems.com/gls-led-grow-system/