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Old 07-10-2011, 05:36 AM #21
GP73LPC
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VerdantGreen's 63 watts produced 59 grams for a .93 gpw rating...

https://www.icmag.com/ic/showthread.php?t=148736
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Old 07-10-2011, 05:47 AM #22
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MeanBean got 118 grams with a 126 watt LED light. that's .93 gpw...

https://www.icmag.com/ic/showthread.php?t=153843
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Old 07-10-2011, 06:05 AM #23
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MeanBean got 170 grams with a 126 watt LED light on a mover, for a .72 gpw... (2 grows covered by the light, with two different lighting cycles)

https://www.icmag.com/ic/showthread.php?t=157534
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Old 07-10-2011, 06:23 AM #24
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Blazeoneup got 203 grams from 205 watts for a .99 gpw

https://www.icmag.com/ic/showthread.php?t=160480


EDIT: THIS THREAD AND MEMBER ARE NO LONGER HERE. BUT THESE RESULTS WERE VERY REAL.

EDIT: Also the 205 watts here is really 180 output so the gpw rating is 1.12
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Old 07-10-2011, 11:51 AM #25
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Hey GP, just want to say that you are doing a great job compiling this info in a centralized thread. I am sure this thread will become reference to many a future growers. Keep up the good work.
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Old 07-10-2011, 05:53 PM #26
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thanks Milhouse,

my reasoning on this thread is two fold...

1. provide documentation to non-believers that LED's do have what it takes to grow killer weed.

2. a collection of links to LED grows


to me, LED's are the way to go
- no heat
- longer life
- very efficient (no unused spectrums)
- about half the wattage needed per sq ft (as compared to HID)

startup costs is the con. but prices should come down over time...
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Old 07-11-2011, 05:01 AM #27
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Originally Posted by GP73LPC View Post
VerdantGreen's 63 watts produced 59 grams for a .93 gpw rating...

https://www.icmag.com/ic/showthread.php?t=148736
Those lights draw an actual wattage of 55 watts, and the strain he was growing was described as a medium yield one. With descent lights and a very skilled grower, over 1 gram a watt is achievable.

Good lights are expensive but the results are good right now.
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Old 07-11-2011, 05:05 AM #28
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grams per watt per month.
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Old 07-11-2011, 05:19 AM #29
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Quote:
Originally Posted by yesum View Post
Those lights draw an actual wattage of 55 watts, and the strain he was growing was described as a medium yield one. With descent lights and a very skilled grower, over 1 gram a watt is achievable.

Good lights are expensive but the results are good right now.
well then a 1.07 gpw rating is in order for that grow...
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Old 07-11-2011, 05:44 PM #30
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Re: LED Grow Results: Grams per Watt
Gpw is really quite a useless parameter. Grams per Watt hour tells you a lot more

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