Design a comparative test ......

[LEDGirl]

Ledgirl

Send some lights to this guy: http://www.cannabiscafe.net/foros/showthread.php?t=143647#googtrans/es/en

Just a innocent suggestion, might be quite interesting If he can pull 388g and 428g dry out of 240 w of china-panels..

If he's able to pull almost 1.8 grams per watt out of a no-name Chinese panel, it shouldn't be difficult for people to believe our lights can do the same. Betcha Scumbragger will come up with something ridiculous to say though, being how someone on the internet did what he's unable to (he thinks he's the best or something...). He denies the fact that my good friend yielded 1.8 grams per watt (little over 1pound with 252W) with our units, or that I yielded over 1.5 grams per watt, and keeps attacking me for only yielding .9 grams per watt with our LED's his first time around.

Thanks for the link Unthing. Is that guy also a member here on IC? If not maybe you should invite him here and I'd make him some sort of an offer on a panel. It would be nice to have another individual yielding over 1.5 grams per watt with our lights

 

[unthing]

I don't think he's a member here. But Knnna is around here and some other guys from those spanish forums. Very knowledgable guys.

 

[manitu]

I think a test of a 126w panel against a 400w HID is viable, but I see some problems with the tests people have used.

First of all , I would use a SOG setup , with a well documented strain where people (more than one) has posted g/w numbers before.
No pruning , no training.

Second , (being used to coco) I would use the same runoff targets to determine nute strength. Because of the difference in evaporation between HID and LED , I suspect that adjustments has to be made.

A even canopy is a must!! Wich can easily be obtained with bricks under the pots in a drip-watered coco setup

The heat issue is the biggest problem as I see it.
I understand the argument about heating canceling out the power-savings , but remember , we have designed our growrooms for decades with the goal of keeping temps down.
I do not think it's fair to run both systems in similar rooms.

So,, In a optimised room with low heat-loss , decent ventilation (still needs CO2..) , heat-mat under the pots , I am convinced the LED's can compete.

One more thing.. I would also plant more cutlings than I would expect to finish. If you expect to flower 9 under each light , 15 cutlings on each side and you can make a average selection , discarding any runts.

.manitu

 

[LEDGirl]

Hi Manitu,

That sounds like a good comparison, and I've advised most of the individuals who received our promotional products to use similar methods to those you've stated for their comparison grows. In case you didn't know, we sent out a LOT of free units lately, and will have at least 3 or 4 of our 205W units going up against 400W HID's via various members. We also have our 126W going against a 250W HPS, and a few others scheduled.

You are certainly on the right path though. People need to start re-designing their rooms for LED optimization, not HID, and I think a lot of them get caught up on that. Instead of building a smaller insulated area, they think a heater is a more viable option (and it very well could be for them). But to further what you were saying, if people don't grow properly with LED (just like HID), they won't get the results they're after. I tried to arrange a "grow tips" section on our website that covers most of this, but a lot of people don't seem to look at it. Anyhow, temps between 80-88 degrees, lights at 6-9", even canopies, 60-70% humidity, and of course CO2 will make a lot of difference with your LED garden.

 

[kief weed]

Have you heard of LGM5 LED grow light . How does it compare to your led? The light cost $260 and uses 9 watts.

 

[LEDGirl]

Check out this website: http://www.greenpinelane.com/

If you look on the left hand side of the page you will see the various grow tests carried out by Steve, the owner of the site. Click on the one labeled "LED-Grow-Master LGM5 Pro" and you will be able to see his results using the light from veg throughout bloom.

After you've had a chance to look at that, take a look at what Steve does with the generic 90W UFO or Theoreme Innovation lights. From customer reports online, our lights are about twice as efficient as those from Theoreme, so when you look at the photos you'll know how our lights would compare.

I wish LED Grow Master would stop wasting people's money on their super cheap to produce grow lights. 9W of LED's for about $250... that's $27.80 per watt using super-low wattage LED's. Our 205W is only $3.33 per watt including shipping, using lots of high wattage LED's. LGM also uses orange which they know has little to no effect on plant growth, and they tell you that you need to use a HID with their lights in order for them to function. Our lights are a stand-alone replacement for HID, they do not need a HID to function. Anyhow there are really too many differences to list, but I'm still hoping LGM comes out with that new Llynx design they've been promising for the last 3 years... Otherwise they fall in the category with most of the rest, who created a single light and never did any development afterwords (much like Procyon).

 

[ft100]

Y'all know if foomie is doing it then it will get done right with pics, details, class, and professionalism. Posted up to watch this one. Burn some of that black geisha for me. Peace smoke respect

 

[kief weed]

LEDGirl,

thank you for the information on the website and for your quick reply.

I had recently purchased a led 90 watt UFO from sunlight solutions for $199. I used it for 25 days positioned 12" from the canopy. I didn't like the results so I sent it back for a refund minus 10% restocking fee and shipping cost. They told me to have the light positioned 2" from the canopy for best results.
Since I am new to the indoor soil grow, what size led light do you recommend? I have only a 150 watt hp used for flowering and it's fine for my size of grow. What do you recommend for additional efficiency?

 

[LEDGirl]

If you used our lights at 2", they would likely bleach your plants. It may be doable with 120 degree LED's though.

As far as what light would work best for your grow, that depends on the area you are growing in. Some people replace their 150W HPS with our 63W light which is recommended for a 12" x 18" area (1-2 small plants). Other individuals choose to go with the 126W which is recommended for an 18" x 30" aarea (3-4 small plants). Either way you go, I would recommend using a screen method like VerdantGreen and a few others, creating a nice and even canopy with shorter plants. Keep your temps between 80-88 degrees when the lights are on (may want to get some insulation), and be careful not to over-water since LED's don't evaporate it as quickly from the soil as HID.

 

[Epod]

well iam an old grower and geting 1gpw on hps ive never had it .5gpw i get most of the time geting 1gpw from a led sound it should be easer to get as i see that a full rebuild is the way to go if converting over to led and is seams to need a closed enviroument to keep the temps up and not add heat to the grow chamber

led girl say a lot of truth on how led setups work and geting the right resaults from your grow all depends on how much time u put in to the beging of the grow to get the maximum yeald back

last crop 2600w=1260grams

 

[LEDGirl]

I had a customer call in yesterday who stated his first grow with our LED's produced roughly 1.1 grams per watt. Now I'm trying to get him to upload his grow to the web! MeanBean hit .9 grams per watt on his first and second grow with our 1st 126W generation LED. I think VerdantGreen and Synax will also post numbers around 1 gram per watt or higher on their first rounds, and from the looks of it Sleepy may do so as well. The .5 grams per watt you listed from your HID is about the average I hear from most people. The really good HID guys are up around .8 grams per watt with consistency, and the ungodly HID growers are pulling 1gpw (sometimes a little more) with their vertical and screen style grows.

1 gram per watt should be a relatively simple yield to achieve for anyone using LED grow lights, as long as you maximize the potential of your area as we've already gone over. Keep canopies shorter and even, maintain temps of 80-88 degrees, grow a decent strain, and use good nutes. Your first few rounds will likely land in the .7-1.1 gram per watt range, and from there on out you should be able to achieve 1.5 grams per watt and higher. I've personally done better than 1.5 grams per watt, as has a friend of mine using our lighting, so it's definitely achievable.

 

[Zombo]

I switched a LR2 under a stock Aerogarden CFL (3x23w) right at flowering to the 63w that Cammie sells. I am BLOWN away by the budding happening - I will have 9 or 10 hand sized colas from one plant.
I will for sure get a scale to weigh this, because I'm surely getting at at least 30gm off this grow, and this is only my second one. Ever.