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Silver or lead

Well-Known Member
I like that the 120s are tapped for 4 chip holders. Between that and constant voltage drivers there is a lot of room for upgrading. It's nice to know this stuff isn't going to be obsolete for a while as quickly as the technology is improving.
 
CobKits

CobKits

Well-Known Member
thats part of the reason im moving toward the 28mm cob as the standard. there are at least a half a dozen manufacturers using this size and most have multiple models in that package size (citi 1212/1812/1818, luminus clm22/cxm 22, getian, seoul, edison, LG, etc)

and thats just one holder. numerous other chips take the same 35mm spacing using a different holder (cxb3070 citi clu038, etc comes to mind)

same with 38mm - citi clu058, luminus cxm32, getian all use same holders
 
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Cortezh

Active Member
I wanna build a setup to veg and flower in a 2x2 tent and see that your out of stock on the citizen 1212 3500k. When will these be back in stock?
 
CobKits

CobKits

Well-Known Member
ill have to check stock ive been blindly filling orders and need to go over all inventory. im pretty sure i have quite a few 3500k 80 and a handful of 90. def have em in 1818
 
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Cortezh

Active Member
CobKits said:
ill have to check stock ive been blindly filling orders and need to go over all inventory. im pretty sure i have quite a few 3500k 80 and a handful of 90. def have em in 1818
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Ok so using 4 3500k Citi 1818s with the meanwell hlg 185 driver woukd that be a too much for a 2x2 tent?
 
CobKits

CobKits

Well-Known Member
youd prob dim a bit. it would work if you gave yourself extra distance to canopy. (which would grow a nice deep canopy)
 
vahpor

vahpor

Well-Known Member
Cortezh said:
Ok so using 4 3500k Citi 1818s with the meanwell hlg 185 driver woukd that be a too much for a 2x2 tent?
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FWIW, I ran 4x B3590 (3k) on a 185-1400b driver in a 2x2x3', no optics. Active cooled, and as close to the ceiling as possible.

I ended up running it dimmed down quite a bit, in the 100w range. I think 700 or 1050ma would have been fine for my situation. 4 efficient COBs is a lot of light in a 2x2 when run above 1 amp. If you're force feeding and using CO2, you can probably run them hotter than me. But, I did have my best plant and harvest to date with this ~100w 4x 3590 setup.

YMMV.
 
CobKits

CobKits

Well-Known Member
that sounds about right. 25W/SF with cobs run uber-efficient like that. i think thats a good rule of thumb

25-30W/SF if cobs run very soft
30-35W/SF if cobs run very hot
 
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Cortezh

Active Member
vahpor said:
FWIW, I ran 4x B3590 (3k) on a 185-1400b driver in a 2x2x3', no optics. Active cooled, and as close to the ceiling as possible.

I ended up running it dimmed down quite a bit, in the 100w range. I think 700 or 1050ma would have been fine for my situation. 4 efficient COBs is a lot of light in a 2x2 when run above 1 amp. If you're force feeding and using CO2, you can probably run them hotter than me. But, I did have my best plant and harvest to date with this ~100w 4x 3590 setup.

YMMV.
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What type of heatsink were you using?
 
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