Limosnero
Well-Known Member
Yes, gonna do some fan stripping & juicing tomorrow I think.Filled in nicely.
Yes, gonna do some fan stripping & juicing tomorrow I think.Filled in nicely.
Thanks Just one plant...it's about 8" from the light.They're looking cute! Keep up the good work. How close have the plants gotten to the light after stretch? They look pretty darn happy.
Sincerely,
IlovePlants
Thanks...Different growth for sure. She's gonna have to plump up a bit to hit some good numbers I think. One observation is that bud structure is more dense vs HPS.Looking very healthy,any thoughts on the new light vs HPS for the Chaos at this stage?
BonjourNice build...nice looking grow.
I'm in the midst of my own COB project. I'm on a more limited budget than some of you though. I took a crapped-out T5 6 bulb fixture, gutted it, and am nearing the end of the COB conversion.
View attachment 3534857
View attachment 3534858
I opted for an active cooling on the 4" x 6" heat-sinks (not shown) and two 120mm's pulling heat from fixture.
This picture is my mocking up the diamond plate (for vanity purposes only) they will run under the cross members.
Which reflector is that? Link to where you bought them? I think it all matters on the environment such as mylar or in a tent. Then how close the led will be from the plant which changes with the amount of watts and heat.I have a question for Supra, Capt Morgan and here......I've noticed that all of you run your COB's "bare" without lenses or reflectors. Now I'm not all that savvy about photons and such, but with the 115 degree spread with these COB's it would seem to me directing a more focused light spread would be desirable.
I bought these but have not used them as of yet.
View attachment 3535466 View attachment 3535467
Is my thinking flawed in this regard?
My .02; if you hold a flat disk in your hands, you can see for yourself how the light distribution pattern will work; first, hold it flat to you, so it's a full circle. This is where the COB chip will emit its full luminance. As you begin to tilt this disc, its apparent surface area begins to drop. At a 30° tilt it isn't very much, at 45° it's still less than half- and at a 60° tilt there isn't much surface area left at all.I have a question for Supra, Capt Morgan and here......I've noticed that all of you run your COB's "bare" without lenses or reflectors. Now I'm not all that savvy about photons and such, but with the 115 degree spread with these COB's it would seem to me directing a more focused light spread would be desirable.
I bought these but have not used them as of yet.
View attachment 3535466 View attachment 3535467
Is my thinking flawed in this regard?
I bought them here:Which reflector is that? Link to where you bought them? I think it all matters on the environment such as mylar or in a tent. Then how close the led will be from the plant which changes with the amount of watts and heat.
Interesting. I read someplace that there's a degradation of light with lenses, but not with reflectors. I suspect it depends on the quality of the lens.My .02; if you hold a flat disk in your hands, you can see for yourself how the light distribution pattern will work; first, hold it flat to you, so it's a full circle. This is where the COB chip will emit its full luminance. As you begin to tilt this disc, its apparent surface area begins to drop. At a 30° tilt it isn't very much, at 45° it's still less than half- and at a 60° tilt there isn't much surface area left at all.
So what? Here's where it gets interesting for me; if you run your chips super soft with the intention of running them close to the canopy, I'd go with no lenses in order to turn all that light going sideways into additional canopy penetration and side lighting for leaves nearby.
OTOH, if you're running big watts and you're hanging your chips up high bay style, you'll want lenses because the side lighting would dissipate or simply miss the canopy altogether.
The consensus design choice here seems to be towards running the chips softer to get more efficiency, which then leads to cola skimming plant to canopy distances that naturally take best advantage of naked COBs.
Since I'll be running my chips vertically, I feel there's a much higher potential for contact damage to the LES. It's for this protection that I'm running lenses. I chose ninety degree ones, so the light still spreads plenty.