giggywatts
Well-Known Member
hey captain, any good news on the cree floods?
Flowering with Cree bulbs
- Thread starter captainmorgan
- Start date
captainmorgan
Well-Known Member
Plants are doing very well but I can't really compare it to the A19's because of so many differences in the setups, less wattage,no UV and no 730 nm. Plus the critical kush was not vegged as long,but I will be adding UV and 730 to all my setups as I can afford to. The CK is at 12 days and the deathstar is about 5 or 6 weeks in.
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captainmorgan
Well-Known Member
Day 49 update
PSUAGRO.
Well-Known Member
^^lol.....that's crazy...........no reason for us to buy led panels anymore, with results like this; seriously!^^ from cree household bulbs.......and your only on day 49 of flower!!! I knew she was gonna be a beast, but god damn captain. cree xt-e white power is putting most led panels to shame for a fraction of the cost......I'm speechless
awesome job and I can't rep you anymore..........but I will copy you
foreverflyhi
Well-Known Member
this is fucking impressive!! EDIT:im now pissed for spending hundreds on my led set ups....
PetFlora
Well-Known Member
He does have some $$$$$ tied up in them
captainmorgan
Well-Known Member
20-9.5 watt Cree A19 2700k bulbs which is 190 watts plus 5 hours of 24 watt T5 HO 7000k UV which is on .37 of the light cycle for a 8.8 watt average for the 13.5 hour schedule,so 198.8 watts total and the 730 nm at lights out for 10 minutes.
Photo #5 appears to be the best closeup of what is obtainable with LEDs. The problem with LEDs is simple: the individual LED light is extremely limited in output. What is the current max output for a single LED bulb? 5 watts or 10 watts? Either way, that limitation can't be overcome by massing them together as you then create a heat problem. Even if the heat problem is overcome, the fact that such a low wattage bulb - in any configuration - is not going to produce sufficient luminous output to reach any real distance remains.
LEDs are not only unsuitable for commercial efforts, the high cost represents money down the toilet for the hobbyist as well.
hyroot
Well-Known Member
^^^^^^Then why do all tv's, cars, businesses, schools, green houses, all using leds now. All the shopping centers around here all have led's in the parking lots. One of the costcos converted all their mh and hps to led inside. Not commercially suited. Do you live in Amish country or what. Get a clue buddy. Cree developed leds that produce more lumens per watt than hid. The hid bulbs are replaced every year. Leds last usually at least 3 years at minimum but the crees have 10 year warranty's and are rated to last as long. That depends on the thermal design. All the companies and govt related all get subsidies so their cost is minimal in comparison.
what capt is doing with 200 watts of led. A 400w hps couldn't compete.
what capt is doing with 200 watts of led. A 400w hps couldn't compete.
PSUAGRO.
Well-Known Member
^^^ why bother hyroot? this guy is just trolling
He ask's what's the current max output for led bulbs and then makes a broad generalization that leds are not commercially viable! lol
Would love for fg2020 to show us another plant with captain's bud development(it's only at day 49!) under ANY other indoor light source consuming less than 200w........the wait is going to be brutal
He ask's what's the current max output for led bulbs and then makes a broad generalization that leds are not commercially viable! lol
Would love for fg2020 to show us another plant with captain's bud development(it's only at day 49!) under ANY other indoor light source consuming less than 200w........the wait is going to be brutal
JohnNeedsMeds
Well-Known Member
Awesome thread! *subbed* 
JohnNeedsMeds
Well-Known Member
Hi guys, I wanted to throw this in here because I was looking for a conversion tool that would allow me to check what nanometer peaks correspond to Kelvin temperatures.
>>
Nanometers refers to the wavelength of a single specific colored light such as that emitted from a laser. Kelvin’s measure the color temperature of a full spectrum light source.
There is a relationship between a color temperature and the peak wavelength in its spectrum. It's called Wien's law.
Wavelength (nanometers) = 3,000,000 / Col temp (Kelvin)
So at 4,500K, the peak wavelength is 666nm (red) at 6,000K the peak wavelength is 500nm (bluish green) and at 7,500K the peak wavelength is 400nm (deep blue)
Outside these temperatures, the peak is outside the visible spectrum.
And in every case, that's just the peak wavelength - all other wavelengths are present as well, in slightly lesser intensities, adding up to a more-or-less white result.
<<
I am really interested in what you all are doing with the Cree lights so it got me to thinking and comparing white Kelvin lighting. I’m excited about the prospects! Any thoughts?
>>
Nanometers refers to the wavelength of a single specific colored light such as that emitted from a laser. Kelvin’s measure the color temperature of a full spectrum light source.
There is a relationship between a color temperature and the peak wavelength in its spectrum. It's called Wien's law.
Wavelength (nanometers) = 3,000,000 / Col temp (Kelvin)
So at 4,500K, the peak wavelength is 666nm (red) at 6,000K the peak wavelength is 500nm (bluish green) and at 7,500K the peak wavelength is 400nm (deep blue)
Outside these temperatures, the peak is outside the visible spectrum.
And in every case, that's just the peak wavelength - all other wavelengths are present as well, in slightly lesser intensities, adding up to a more-or-less white result.
<<
I am really interested in what you all are doing with the Cree lights so it got me to thinking and comparing white Kelvin lighting. I’m excited about the prospects! Any thoughts?
captainmorgan
Well-Known Member
Troll,if you knew what you were talking about I'd try to answer your post but you don't.
HIDiots, it won't even slow them down. That's why their HIDiots.
These Cree A19's are amazing!^^lol.....that's crazy...........no reason for us to buy led panels anymore, with results like this; seriously!^^ from cree household bulbs.......and your only on day 49 of flower!!! I knew she was gonna be a beast, but god damn captain. cree xt-e white power is putting most led panels to shame for a fraction of the cost......I'm speechless
awesome job and I can't rep you anymore..........but I will copy you
When I added the 7000k UV I swapped out the 5000k's for 2700k's, figured I was getting my blue from the UV bulb.
captainmorgan
Well-Known Member
I don't think that formula is accurate when it comes to grow lights, it may be for sunlight tho. Many lights use phosphors that give off blues and reds with less greens,many of the bulbs peak at 630 nm and fall off from there and it seems more of a blue/red ratio with some other colors blended in.Hi guys, I wanted to throw this in here because I was looking for a conversion tool that would allow me to check what nanometer peaks correspond to Kelvin temperatures.
>>
Nanometers refers to the wavelength of a single specific colored light such as that emitted from a laser. Kelvin’s measure the color temperature of a full spectrum light source.
There is a relationship between a color temperature and the peak wavelength in its spectrum. It's called Wien's law.
Wavelength (nanometers) = 3,000,000 / Col temp (Kelvin)
So at 4,500K, the peak wavelength is 666nm (red) at 6,000K the peak wavelength is 500nm (bluish green) and at 7,500K the peak wavelength is 400nm (deep blue)
Outside these temperatures, the peak is outside the visible spectrum.
And in every case, that's just the peak wavelength - all other wavelengths are present as well, in slightly lesser intensities, adding up to a more-or-less white result.
<<
I am really interested in what you all are doing with the Cree lights so it got me to thinking and comparing white Kelvin lighting. I’m excited about the prospects! Any thoughts?
captainmorgan
Well-Known Member
Here's a example of a bulb I've used and is rated around 5000k and another at 2900k.
