LEC - Light-Emitting Ceramic

ttystikk

ttystikk

Well-Known Member
Astro Aquanaut said:
Sorry, to barge in, however I been looking at LED vs LEC etc...

So, basically in a 4x4, 4 LEC's would produce great results all the way through and a target of 4lb per a 4x4 would be reasonable?I am assuming also 5x5, 4x6, 4x8(kinda thin)

Basically, have been running the old HPS SE 1k's, and looking to upgrade to either LED or LEC. After reading for hours still can't make up my mind :) The old philips cmh 400 when they came out do excellent veg however the flower on them was a bit weak...
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Not sure how you would fit 4 of them in that small a space.
 
Astro Aquanaut

Astro Aquanaut

Active Member
ttystikk said:
Not sure how you would fit 4 of them in that small a space.
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I per a sq ft or 2 sq ft in for a 4x4 area ( not a tent but a room ) :P even the SS LEC315 hood is smaller than a square foot... You would have overlapping coverage, basically... That is my thought at least 1k per 4x4... 4x315 at 78.75 watts per a square ft...

Forgive me but am a bit out of the "scene", so my views are outdated probably by 5 years or so... However, going by old train of thought that would be optimal for the most part, and pushing around 8k lumens per a sqft which makes sense, and from what I seen if you can keep it 18" away you should be running around 1200 to 1900 micomoles over the 4x4...
 
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ttystikk

ttystikk

Well-Known Member
Astro Aquanaut said:
I per a sq ft or 2 sq ft in for a 4x4 area ( not a tent but a room ) :P even the SS LEC315 hood is smaller than a square foot... You would have overlapping coverage, basically... That is my thought at least 1k per 4x4... 4x315 at 78.75 watts per a square ft...
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So 4 x 315W over 16 sq ft = 78.75W. At least double what anyone else runs them at, and well beyond that for most folks.
 
a mongo frog

a mongo frog

Well-Known Member
Astro Aquanaut said:
Sorry, to barge in, however I been looking at LED vs LEC etc...

So, basically in a 4x4, 4 LEC's would produce great results all the way through and a target of 4lb per a 4x4 would be reasonable?I am assuming also 5x5, 4x6, 4x8(kinda thin)

Basically, have been running the old HPS SE 1k's, and looking to upgrade to either LED or LEC. After reading for hours still can't make up my mind :) The old philips cmh 400 when they came out do excellent veg however the flower on them was a bit weak...
Click to expand...
How does one get 4 pounds in a 4x4 area?
 
Astro Aquanaut

Astro Aquanaut

Active Member
a mongo frog said:
I don't think it really works like that. You have the have the space for the 4 pounds to fit.
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I believe the exact convo was "I am assuming also 5x5, 4x6, 4x8(kinda thin)", However you should still be able to get close to that.. People have gotten 1gpw off of 1k HPS on a 4x4, no?
 
a mongo frog

a mongo frog

Well-Known Member
Astro Aquanaut said:
I believe the exact convo was "I am assuming also 5x5, 4x6, 4x8(kinda thin)", However you should still be able to get close to that.. People have gotten 1gpw off of 1k HPS on a 4x4, no?
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Yes people push 2 pounds out of a 4x4 on some strains. And i think there pushing 2+ in a 5x5 (DE) with any strain. Im just trying to picture the bud in a 4x4 with 4 pounds in there is all. Im not calling bs on you, just thinking is all.
 
Astro Aquanaut

Astro Aquanaut

Active Member
a mongo frog said:
Yes people push 2 pounds out of a 4x4 on some strains. And i think there pushing 2+ in a 5x5 (DE) with any strain. Im just trying to picture the bud in a 4x4 with 4 pounds in there is all. Im not calling bs on you, just thinking is all.
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Well it is hypothetical right, so am not saying am pulling that... However, 1gpw on a 4x4 can be done, I don't weigh stuff just eye ball. but my point is you should be able to pull 4 lb off of 4x315 LEC whether that is in 4x6, 5x5 etc from what the numbers people are throwing out... On you tube they have a guy doing a LEC grow 3x315 LEC's covering a 4x8 vs 1k HPS SE on a light mover for 4x8, and it looks good, so my view is shorten that add another light... I wouldn't use a light mover on a 4x8, but 4x6 ( but that is just me )
 
a mongo frog

a mongo frog

Well-Known Member
Astro Aquanaut said:
Well it is hypothetical right, so am not saying am pulling that... However, 1gpw on a 4x4 I believe can be done, I don't weigh stuff just eye ball. but my point is you should be able to pull 4 lb off of 4x315 LEC whether that is in 4x6, 5x5 etc from what the numbers people are throwing out... On you tube they have a guy doing a LEC grow 3x315 LEC's covering a 4x8 vs HPS SE on a light mover for 4x8, and it looks good, so my view is shorten that add another light...
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Man im not sure. That would be great though!!!! But are we not dealing with 36 square feet here? Like if 3x3= 9 or 10 i don't remember, and you have 4 of them thats like 36 or 40 square feet i don't remember really.
 
Astro Aquanaut

Astro Aquanaut

Active Member
a mongo frog said:
Man im not sure. That would be great though!!!! But are we not dealing with 36 square feet here? Like if 3x3= 9 or 10 i don't remember, and you have 4 of them thats like 36 or 40 square feet i don't remember really.
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So, for 4x315 LEC 1260 watts
4x4: 16 sqft, 78.7 wsqft
4x5: 20 sqft, 63.0 wsqft
4x6: 24 sqft, 52.5 wsqft
5x5: 25 sqft, 50.4 wsqft
4x8: 32 sqft, 39.3 wsqft

So, there must be some optimal for these LEC's which I do not know... I believe the coverage area is 2.5x2.5 supposedly.... So, if you had something like a 4x5 area with 15 plants, you should be able to pull a QP or so off each which I don't think is impossible ;)

note: this is hypothetical am just looking at either buying LEC or LED and running some numbers. Someone with more experience doing 4x4 or larger areas with LEC can chime in that would be fantastic...
 
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BOBBY_G

BOBBY_G

Well-Known Member
theyre dwarfed- cuts were taken from flowering bottoms and they reversed and are 12-18" tall bushes with 4+ strong branches each. prob 16 in a scrog ask me next week
 
Astro Aquanaut

Astro Aquanaut

Active Member
BOBBY_G said:
theyre dwarfed- cuts were taken from flowering bottoms and they reversed and are 12-18" tall bushes with 4+ strong branches each. prob 16 in a scrog ask me next week
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Are you going to have a journal on it? or keep us posted :) Also what medium / method are you using (e&f,dwc, soil, hempy, etc?)


Drawing39 - Copy (2).jpg


If the PAR ratings are correct on the SS LEC 315 then that would be perfect coverage for a 5x5 at 18" off the canopy with 63.0 watts sqft... :)
 
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GroErr

GroErr

Well-Known Member
I don't usually grow for weight but did one run and got 1.2 gpw with 26w/sq./ft. Sweet spot for gpw is probably 30-35w/sq.ft. if you can configure them to cover your area. Key I think for yields is taking advantage of their penetration as they grow decent bud as far down as 30" depending on strain.
 
G

Grown'toke420

Member
GroErr said:
Sure no problem, just pm me so we don't hijack the thread. The one you're referring to was a SOG in my small LED tent usually reserved for breeding, nice pull in there, those strains produced well. I like LED COBs as well, pretty close between the techs as far as yield capability. I couldn't put one of these LEC's in a 2x2x4' space, it would burn it up - lol

This was that SOG you're referring to 6x 1gal, 3x THC Bomb and 3x Blue Dream clones flipped at around 10 days into the 1gal pots.

View attachment 3601171

Cheers :bigjoint:
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Yes!!! Right now ur a legend in my eyes! How do you pm? I'm sorry newbie
 
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