Ok- I am talking about effective lumens, not total. 200W of the white light LED is producing 24,000 lumens, but there is no heat, so the plant canopy can be much closer to the light source. HPS lights (all light sources) are measured at 12” from the bulb. Most folks are probably keeping their top buds nearly 24” away from their 1000W HPS to prevent burning. At a distance of 24” those 100,000 drop to 25,000 lumens ( you need to divide by 4, that is the calculation. So if I am running two 100W white LED lamps (4000K spectrum), and getting 24,000 lumens at 12” is effectively very close to the same lumens.
Ok- I am talking about effective lumens, not total. 200W of the white light LED is producing 24,000 lumens, but there is no heat, so the plant canopy can be much closer to the light source. HPS lights (all light sources) are measured at 12” from the bulb. Most folks are probably keeping their top buds nearly 24” away from their 1000W HPS to prevent burning. At a distance of 24” those 100,000 drop to 25,000 lumens ( you need to divide by 4, that is the calculation. So if I am running two 100W white LED lamps (4000K spectrum), and getting 24,000 lumens at 12” is effectively very close to the same lumens.
Your claim of replacing 1000w hps with 200w leds is flawed for more than one reason in my opinion,Ok- I am talking about effective lumens, not total. 200W of the white light LED is producing 24,000 lumens, but there is no heat, so the plant canopy can be much closer to the light source. HPS lights (all light sources) are measured at 12” from the bulb. Most folks are probably keeping their top buds nearly 24” away from their 1000W HPS to prevent burning. At a distance of 24” those 100,000 drop to 25,000 lumens ( you need to divide by 4, that is the calculation. So if I am running two 100W white LED lamps (4000K spectrum), and getting 24,000 lumens at 12” is effectively very close to the same lumens.
I'm sorry but that's about 120 lumens per watt which is really not good by modern LED standards. Now its about 170 lumens per watt and generally you have alot of room to improve by driving units softer then manufactured test currents.
I mean some COBs are in that range too but the older ones mostly....
I agree that these are not the most efficient LEDs compared to the new Cree COBs. But I just don’t care to do it as a DIY project, and for $160 I got what I needed
Man at the end of the day that is all that matters.
What light did you buy?Indeed. Thanks for your input Future Grower.
What light did you buy?
Any pics dudeI found 100W white LED lamps in the 4000k spectrum at Super Bright LEDs.com
I paid $80.00 each, the price just came down to $72.00, I know because I just bought a 3rd lamp. Each one produces 12,000 lumens, I have the lights about 25” apart. Am growing 4 blueberry under the two lamps. I top and lollipop my plants to try to get most of the bud up high. Surprisingly the buds that grew 12-18” below the top bud were not crappy popcorn buds, they had decent size and density.
You used the led lights to flower too ?I found 100W white LED lamps in the 4000k spectrum at Super Bright LEDs.com
I paid $80.00 each, the price just came down to $72.00, I know because I just bought a 3rd lamp. Each one produces 12,000 lumens, I have the lights about 25” apart. Am growing 4 blueberry under the two lamps. I top and lollipop my plants to try to get most of the bud up high. Surprisingly the buds that grew 12-18” below the top bud were not crappy popcorn buds, they had decent size and density.
I got a 600w meizhi led!You used the led lights to flower too ?
You must have veg for awhileI got a 600w meizhi led!
Was $159 au
Happy with what it's doing so far!
You must have veg for awhile
Dang . Did you lst it ? You have a good spread on outside for colas .Same plant only 8 weeks ago!
Yeah I topped this girl at 5 nodes, not long after the last pic I put up.Dang . Did you lst it ? You have a good spread on outside for colas .
Yeah mate that's just a fabric Coles shopping bag! It worked really really well tooAlso are those bags essentially a grocery mesh bag ?
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