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i personally find 2700 is too far in the red (unless youre using it to supplement) i can actually shoot the 3000 and 3500k luminus with the meter if you wish

1825s are pretty good in terms of efficiency, esp at 75W. i still have a tent on those thats kinda the problem of the larger cobs, they are not as standard, where the 28mm cobs are all bolt-in replacement cxm32s are the same size and voltage as your cobs. ive been leery to stock those as the...

just a heads up the bitcoin payment gateway on the site is temporarily disabled, if you want to purchase using bitcoin, email me for wallet address also USPS shipping is currently suspended to many foreign countries! please check your country here first before ordering...

ill checkout those veros when i can. time for a new shootout. the luminus gen 4s are about 6-8% more efficient than the gen 3s FWIW no 'o' in Luminus (not nitpicking, thought that correction would be useful for search feature tho)

yeah i built myself some awhile back. with the 50mm fan that can mount to those heatsinks (just needs run with a tap), ive run em at 150W per heatsink. heatsink gets pretty warm but with the 4 cobs spread out it maintains decent efficiency im looking forward to getting some photometrics on...

more to come this week, i have lots of oddball stuff to blow out, prebuilt stuff, prototypes, scratch and dens, some other new products...

closeout on last of the gen 5 citis (1212 2700K) $5 http://cobkits.com/product/citizen-clu048-1212-90cri-gen5/ closeout 1818 2700K gen 5 (both 80 and 90 cri) - $10 all 1818 gen 6 on sale for $18 http://cobkits.com/product/citizen-clu048-1818-80cri-choice-of-color-temps/...

blue cobs back in stock and onsale http://cobkits.com/product/citizen-clu048-1212c4-b455-blue-cob/

the single-cob fixtures were often requested - so i modified my latest batch of heatsinks to have the proper thru holes - as well as multiple chip mounting options. im going to send some of these multi-cob fixtures off for full photometric testing some of the options will include HBG60-1400...

as my friends used to say - "It's 4:20 somewhere" this ones for the east coasters sale on 8 pack pin fin heatsinks (black and silver at $140, purple at $150) use code "heatsink" for free shipping http://cobkits.com/product/133mm-passive-pin-fin-heatsink-for-clu048-cxm22-vero-29-8pk/

if it didnt ahve roots and wasnt in media its almost certainly a lost cause. i was assuming ti had *something* going in that soil unfortuantely when young plants have fresh roots they are very vulnerable to root rot and then they become rootless, and if weak, they dont have the energy to...

4/20 sale will be up at 4:20 (PST of course)

that wilted one will never root if its going to get turgid again, it will be while its on the plant. maybe treat that plant like a clone (100% humidity) and see if it comes back, then clone it

the curve is not linear as ppfd increases. higher GPWs are certainly found at the lower PPFD ranges. higher PPFD growing is diminishing returns, always has been, and any 'leaps and bounds' in horticultural lighting isnt changing this fundamental rule. Look at this rule of thumb i posted in...

the ones i have on my site are the last of the last i suppose

well ill sayfor sure that LONGER doses arent indicated ;)

ok heres a pic, apart from the ones closest to the far red light stretching and yielding less, some threw weird growth that looked like revegging

what would you guys like to see? what would you like to see on sale?

what do you need? i have quite a few cobs that arent up there, like luminus gen 4s

naw its a stable cookie cross ive had for a while i dont generally keep anything that throws nanners