Way2-High
Well-Known Member
Ya I looked up the passport f that I ain’t spending 1200 to test my $150 setup.I use Amnesia Haze and Zkittlez
Mote seriously: lighting passport comes to mind but i dont have any, they are quite expensive up to +1000$$
The Ideal spectrum.
- Thread starter Rahz
- Start date
InTheValley
Well-Known Member
4100k
growmau and greengene discussed this a year or so ago on a podcast, cant remember which one, probably taken down.
they said was the best all around spectrum, and even better if you can add some cyan diodes.
growmau and greengene discussed this a year or so ago on a podcast, cant remember which one, probably taken down.
they said was the best all around spectrum, and even better if you can add some cyan diodes.
Warpedpassage
Well-Known Member
For what its worth, isee that greengenes is selling his strips with samsung diodes which looks to be 3000k, with four 660 xpe diodes.
I do have a question about this kind of a strip for u guys, if the strips are running in series at 1400ma, does that mean that the 660 diodes too will be running at 1400ma, with each red diode using as much as 3.5+watts? That would be nearly 15 watts of deep red and 25 watts for the samsung whites per strip?
TEKNIK
Well-Known Member
It depends on how the board is set up. A 660nm chip is just the same as any other chip only difference is they can be driven harder than a mid power and voltage is less than a standard mid power white. 15watts of red to 25watts of white sounds about right. I personally like to separate mid powers from power LED's to have the boards tunable but alot of people don't like that because it means more expense as another driver is required
jarvild
Well-Known Member
4200k bulbs are all I use now for veg when I run my MH. Mix of 3500 k and 4 k for veg in LED's.
jarvild
Well-Known Member
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jarvild
Well-Known Member
Yes, although most of my trials are for flowering spectra as most of my veg times are 3 weeks max in my set-up.
Warpedpassage
Well-Known Member
Apologies in advance if im asking you to repeat yourself. What kind of red to white ratios are you using? Any 630 in there?
SSGrower
Well-Known Member
IMO we need to push led manufacturer's to use more uv. I think the argument they are unreliable, or not high enough quality is bs. They can certainly put them on seperate channels too. We dont need them full time and in fact I am going to run a little test where uv will run for several hours for a day, then have a few days with no uv. This is a change from my ususal 6min at the top of the hour. I want to allow time for the cytochemical (uv driven) reactions to establish themselves.
IMO there is enough green and blue in white cobs, uv and red is what is needed, I like the idea of using cool white for at least some of the red too.
IMO there is enough green and blue in white cobs, uv and red is what is needed, I like the idea of using cool white for at least some of the red too.
jarvild
Well-Known Member
Of the 70 watts of supplemental 55 watts of that is in the red spectrum which include 6-630nm, 14-660nm, 6-680nm, 5-IR and 5 Far red stars.
TEKNIK
Well-Known Member
UVA is easy, but if you want UVB it makes things much more difficult in LED, it can also be very harmful to you and everything in your room
SSGrower
Well-Known Member
It is a cop out on the part of led manufacturers, "use a reptile or curing t5 or t8". Love the idea of bringing vaporized mercury into my garden.
A risk? Yes.
Quantifiable and easily mitigated? Yes.
I would much rather a directed source like an led than a radial distribution of a gas lamp.
TEKNIK
Well-Known Member
First off, UVB leds as far as I know are not available through a major manufacturer, I have seen some cheap Chinese ones around though, so that moves us to UVC which is available. UVC will destroy everything including the leds that they are close to, so in order to offer a warranty on a manufactured product there can not be UVC leds
jarvild
Well-Known Member
The problem is as a standard UV is frowned upon in general lighting because of the effects of UV radiation on humans. I'm seeing degradation on some of my connectors on my star after six months of 12/12 on my hyper UV and violet diodes. Even the UV diodes in this old ass light light had problems with the uv diodes
.
SSGrower
Well-Known Member
The ways around it involve a compromise in end quality. This is not something attainable through nutrient or photosynthetic reactions. UVC is too far. The boundary of uva/uvb is what needs to be targeted, the gaussian distribution will take care of the further uvb region. These leds are available. A separate puck could mitigate the damage issues. Keep in mind we (I) are talking about someone who would add uv and regardless of if educated of the risk will accept it indifferent to the source led or gas lamp. Led can be made safer than existing technology.
You are all using eye protection when working in your garden anyway, right?
What is the ANSI Z87.1-2015 definition of UV radiation?
The ANSI Z87.1-2015 standard defines UV radiation as follows: Ultraviolet Radiation (UV).Electromagnetic energy with wavelengths from 200 to 380 nanometers.
The UV Scale uses a rather complicated mathematical formula, however, for simplicity, it’s divided into two wavelength categories, far and near.
Far-ultraviolet is defined as; Transmittance of optical radiation with wavelengths from 200 to 315 nanometers weighted by its ability to damage the cornea.
Near-ultraviolet is defined as; Transmittance of optical radiation with wavelengths from 315 to 380 nanometers.
UV Filter Transmittance:
You are all using eye protection when working in your garden anyway, right?
What is the ANSI Z87.1-2015 definition of UV radiation?
The ANSI Z87.1-2015 standard defines UV radiation as follows: Ultraviolet Radiation (UV).Electromagnetic energy with wavelengths from 200 to 380 nanometers.
The UV Scale uses a rather complicated mathematical formula, however, for simplicity, it’s divided into two wavelength categories, far and near.
Far-ultraviolet is defined as; Transmittance of optical radiation with wavelengths from 200 to 315 nanometers weighted by its ability to damage the cornea.
Near-ultraviolet is defined as; Transmittance of optical radiation with wavelengths from 315 to 380 nanometers.
UV Filter Transmittance:
- U2: Max Effective Far UV= .1% / Max Near UV= 3.7%
- U2.5: Max Effective Far UV= .1% / Max Near UV= 2.3%
- U3: Max Effective Far UV= .07% / Max Near UV= 1.4%
- U4: Max Effective Far UV= .04% / Max Near UV= .5%
- U5: Max Effective Far UV= .02% / Max Near UV= .2%
- U6: Max Effective Far UV= .01% / Max Near UV= .1%
TEKNIK
Well-Known Member
I know what UV light is, you want UVB and even if I had UVB leds I could not sell the product with a decent warranty as it will destroy all the other leds
Let's say I came up with a UVB module and it was $50, it lasted only 5 months and destroyed your plants and tent. You would get pretty pissed with me when that happened and would give me a very bad reputation, it's not worth the risk for a manufacturer to do it right now. I will try and work out a practical solution but it's not going to happen this year and probably not next year either.
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