Once you start doing that math and realizing that the most efficient chips aren't very efficient if measured in dollars instead of watts, you will find yourself interested in these:that link doesn;t work. i did the math : 1000W lumatek dimmable (+10% super lumens) you need like 700W of CXA3070. That means after 10000 hours you will pay the difference for electric. Than the question is : is this LED really worth the price ? give me the link again please, you made me curious
...Forget the HID and build yourself a light, It is easier than one might think and there are solderless options available for people who don't want to learn how to solder...
If you want to up your g/w get the most efficient lights you can afford (to lower the watts part) and hit something close to the following (to increase the grams):Yes , you are right. It's not ok for a noob like me to spend money on expensive lights , BUT if I do the math is the same price for 300W LED like for 600W HPS because for HPS I really need proper ventilation. And a reflector. And the yield is much better for LED than HPS/Watt. Some people told me : get the LED , you won;t regret even if you are begginer. Other people said to me : go to HPS cause you are a completly noob at the minut, so is no point to invest in LED. And because I have no experience , that make me so confuse ... With CXA I read that average yield is 1.2 gram/w and hps is 0.8 g/w. I have no other information , only what I read on forums.
Thats what im realizing^ Issue- what rate the lm output starts to decrease? The crees lose little over their lifespan, but how quick do the cheap cobs start to fizzle>?Once you start doing that math and realizing that the most efficient chips aren't very efficient if measured in dollars instead of watts, you will find yourself interested in these:
http://www.aliexpress.com/item/-/2011319079.html
Where do you see a 280nm for sale? Can you actually buy it? Do they have anything in the 290-305 range?Thats what im realizing^ Issue- what rate the lm output starts to decrease? The crees lose little over their lifespan, but how quick do the cheap cobs start to fizzle>?
+What about a good uvb 280nm cob?
Idk but reading this I want closer to 280...(c)Cannabinoid pathway: Anywhere in this pathway UVB does a better job than UVA in energizing a phytochemical reaction that will produce more fully realized THC because "all cannabinolic compounds show an absorption maximum between 270 and 280 nm in the ultraviolet region." Pulled from a 420 thread- 'An elaboration on the phytochemical process that makes THC'.Where do you see a 280nm for sale? Can you actually buy it? Do they have anything in the 290-305 range?
Be careful with those wavelengths. 270nm-280nm is actually UVC. Make sure you know the risks of UVC, don't expose yourself to UVC light, at all if possible.Idk but reading this I want closer to 280...(c)Cannabinoid pathway: Anywhere in this pathway UVB does a better job than UVA in energizing a phytochemical reaction that will produce more fully realized THC because "all cannabinolic compounds show an absorption maximum between 270 and 280 nm in the ultraviolet region." Pulled from a 420 thread- 'An elaboration on the phytochemical process that makes THC'.
http://www.alibaba.com/product-detail/China-wholesale-20w-280nm-uv-led_60124739709.html
http://www.ledwv.com/uv/dvc-280nm-cob-16-chip-p-771.html
I just hate waiting for stuff from china, anybody know usa seller?
I know what you're saying. The easy route would be the 10.0 reptile uvbs for 5 hours in the middle of lights on in flower for guaranteed increased potency but thats not a diy led lol. Maybe adding a few low w 280nm chips to run with the other cobs or a couple 20-30w 280nm that run a few hours in the middle of lights on? Any one done this or know how, safely for plants? The leds here need uvb -Be careful with those wavelengths. 270nm-280nm is actually UVC. Make sure you know the risks of UVC, don't expose yourself to UVC light, at all if possible.
I'm running a reptile bulb in my temp setup right now. I have UVB tanning bulbs for this very reason in my new grow room. From what I saw when I read up on this the target was more like 290-305nm. 270-280 would make me setup a switch on the door so I would never be exposed even by mistake.I know what you're saying. The easy route would be the 10.0 reptile uvbs for 5 hours in the middle of lights on in flower for guaranteed increased potency but thats not a diy led lol. Maybe adding a few low w 280nm chips to run with the other cobs or a couple 20-30w 280nm that run a few hours in the middle of lights on? Any one done this or know how, safely for plants? The leds here need uvb -
uvb thread--
http://www.420magazine.com/forums/cabinet-closet-grow-room-setup/79209-uvb-light-what-s-real-story.html
uv increases thc thread--
http://www.420magazine.com/forums/budding-cycle/71198-elaboration-phytochemical-process-makes-thc.html