Have any of you DIY COB Growers finished a crop under 1000W DE HPS? - POLL

Have any of you DIY COB Growers have actually finished a crop under 1000W DE HPS?

  • Yes

    Votes: 32 29.1%

  • No

    Votes: 78 70.9%
  • Total voters
    110
cdgmoney250

cdgmoney250

Well-Known Member
OneHitDone said:
Everyone is going to discredit your comparison due to the reflective tent
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You are probably absolutely right about that.
It was the best I had to work with at the time before I assembled the whole array.

I could get the light within 10" before canopy temps get warmer than I like, but it usually hangs out around 18" or so.
 
chuck estevez

chuck estevez

Well-Known Member
BOBBY_G said:
is that the custy mag at the grow shops?

after you visit the hydrofarm, sunlight supply, GH, advanced nutrients, and canna booths do you just go home then?
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you mean the places that rule the industry that ALL carry a copy of gavitas, YET, DON"T have LED units. HMMMMM??????????????
in fact, some of them DROPPED the led lights they used to carry, again, HMMMM?
BWGS carries KIND LED, but even you guys won't defend those dinosaurs.
 
frica

frica

Well-Known Member
Now that temp and current droop are rapidly improving soon there won't be a need for monster panels (panels that are 16 square foot) to replace high wattage HPS anymore.

The CLU550 from Citizen is already a 240 watt monster cob. (up too 500+ watt if you drive a higher current through it)
2 500 COB panels each with 2 cobs won't take up too much space.

But most led growers don't go further than Cree or Bridgelux because they belief they're the only worthy ones.
And microgrowers/small growbox growers don't have any need for monster cobs.
 
chuck estevez

chuck estevez

Well-Known Member
frica said:
Now that temp and current droop are rapidly improving soon there won't be a need for monster panels (panels that are 16 square foot) to replace high wattage HPS anymore.

The CLU550 from Citizen is already a 240 watt monster cob. (up too 500+ watt if you drive a higher current through it)
2 500 COB panels each with 2 cobs won't take up too much space.

But most led growers don't go further than Cree or Bridgelux because they belief they're the only worthy ones.
And microgrowers/small growbox growers don't have any need for monster cobs.
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LMK if and when that happens, UNTIL then, quit blowing smoke up peoples asses saying they are as good or better than DE, because as of RIGHT NOW, they are not, AGREED?
 
frica

frica

Well-Known Member
chuck estevez said:
LMK if and when that happens, UNTIL then, quit blowing smoke up peoples asses saying they are as good or better than DE, because as of RIGHT NOW, they are not, AGREED?
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Quit crying.

If people have the space and room for those big azz panels then there's no problem with it, which is an if.
So it's entirely circumstantial. Most circumstances most likely still favour the proven DE Gavitas in big grows.

The CLU550 from Citizen may already be slightly better but there's not much telling since nobody does diy unless it's Bridgelux/Cree and very rarely Nichia and nobody has made Citizen cob growpanels yet.
And even if they are slightly better LED companies always ask for a 200% profit from their products and thus will be too expensive and a plug and play Gavita sounds much more attractive than an unproven DIY lego cob kit.
And I don't blame anyone for that
 
BOBBY_G

BOBBY_G

Well-Known Member
well have to agree to disagree. ill take (10) 100 W luminaires over one 1000W for coverage any day of the week. the only reason people favor the large HPS bulbs is because they are more efficient per watt

remember before 600 and 750W existed? and your choices were 1000 or the way-less-efficient 400?

cobs are actually *more* efficient at lower wattage. im sure a lot of the great results people are getting are due in part to the better coverage of multiple fixtures.

which is also a major reason the bml kicked the shit out all the DE HPS's in that one warehouse test
 
chuck estevez

chuck estevez

Well-Known Member
frica said:
Quit crying.

If people have the space and room for those big azz panels then there's no problem with it, which is an if.
So it's entirely circumstantial. Most circumstances most likely still favour the proven DE Gavitas in big grows.

The CLU550 from Citizen may already be slightly better but there's not much telling since nobody does diy unless it's Bridgelux/Cree and very rarely Nichia and nobody has made Citizen cob growpanels yet.
And even if they are slightly better LED companies always ask for a 200% profit from their products and thus will be too expensive and a plug and play Gavita sounds much more attractive than an unproven DIY lego cob kit.
And I don't blame anyone for that
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you are the only ones crying, you can't compare to DE, deal with it

now cry and throw a bunch of worthless numbers at me,LOL
 
Rahz

Rahz

Well-Known Member
LED Cobs can produce 50-60+% electrical efficiency. More cost up front but as long as the lamp is owned for 3-4 years the worst that can happen is breaking even, and after that it's all gravy, more light for less watts (cost).

Perhaps more important the lack of infra-red heat means the light density can be cranked up without dealing with high canopy temps.

3000-4000K spectrum is blue and red heavy which corresponds with both the chlorophyll response and the Mcree curve, possible evidence it's a superior spectrum range.

Less heat in the system reduces AC requirements.

Directional output and optics can facilitate 99% PAR output reaching the canopy.

Set and forget, for years. No messing with bulbs and minimal attention needed on optical maintenance.

Efficiency doesn't suffer as the wattage is scaled down meaning arrays can provide even coverage over any area. Even intensity can be maintained in low height conditions and narrow width areas.

Dimming the total output potential during veg and/or early stage flower further increases electrical efficiency.
 
Stephenj37826

Stephenj37826

Well-Known Member
Rahz said:
LED Cobs can produce 50-60+% electrical efficiency. More cost up front but as long as the lamp is owned for 3-4 years the worst that can happen is breaking even, and after that it's all gravy, more light for less watts (cost).

Perhaps more important the lack of infra-red heat means the light density can be cranked up without dealing with high canopy temps.

3000-4000K spectrum is blue and red heavy which corresponds with both the chlorophyll response and the Mcree curve, possible evidence it's a superior spectrum range.

Less heat in the system reduces AC requirements.

Directional output and optics can facilitate 99% PAR output reaching the canopy.

Set and forget, for years. No messing with bulbs and minimal attention needed on optical maintenance.

Efficiency doesn't suffer as the wattage is scaled down meaning arrays can provide even coverage over any area. Even intensity can be maintained in low height conditions and narrow width areas.

Dimming the total output potential during veg and/or early stage flower further increases electrical efficiency.
Click to expand...



Just stop with all this making sense. I agree there has been alot of LEDs that didn't live up to the hype but that has changed. As I've said earlier anyone doubting build/buy 1 cree cob light that we here suggest and see for yourself. Then come back here and thank us for the tips. :)
 
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