a mongo frog
Well-Known Member
Just these. Not deep pockets though. These are the cheap ones I think
Once and for all.. L.E.D or H.I.D ??!
- Thread starter NoviceKing
- Start date
MichiganMedGrower
Well-Known Member
I havent seen specific crop lighting. Like a tomato greenhouse unit specifically. I do realize there are complex controllers to virtually do what i am saying.
Plus I was just stoned and speculating.
ttystikk
Well-Known Member
Custom spectrum tuning is not new. The issue is that it's a lot of money for very little gain.I havent seen specific crop lighting. Like a tomato greenhouse unit specifically. I do realize there are complex controllers to virtually do what i am saying.
Plus I was just stoned and speculating.
MichiganMedGrower
Well-Known Member
I didnt mean to imply its new. I am just saying there are current well funded studies in progress to improve things.
Chip Green
Well-Known Member
I have a relatively underfunded LED study going on right now, collecting some fascinating results.
a mongo frog
Well-Known Member
You may need to get your funds up. Can not do a case study with little funds. The economy is booming right now. Whats your trade?
Dr. Who
Well-Known Member
If you grow big plants of over 5'......... HID all day long!
If you want to do SOG, SCROG or run plants on 2 or more levels in rolling shelves.....COB LED's, all day long!
If heat is a BIG issue - LED's
NOW then. The bulk of wiz bang disk or even the big LED banks....... Kind of a waste of money......Blurple LED's suck! Those that praise them, don't or can't understand why. No matter how much some of us tell them why.
Yes, they will grow pot but, I'll toast you on quality and yield!
I have yet to see even ONE of the high $ big bank LEDS tell the truth on light spectrum delivery (NOT COB LEDS). Their favorite claim is to say they deliver usable UV.....Sorry LED makers.....Those nm bands are NOT THC increasing!
ttystikk
Well-Known Member
I grew 6' tall plants using LED, with great success.
Dr. Who
Well-Known Member
Interesting. How many lights?
I trust you, old friend. Therefor, for the size grown....I believe you 100%.
Yet, unless you have a shit ton of money. HID in a commercial setting with max size plants.... I still think HID will be the standard for a while yet.
After seeing the big 6K plus plant op on the East side of the state....I was impressed with the DE HID set up they run (in the BIG plant room).
Yet, they are running another large room of about 5 footers with new, custom assembled COB units... Put your shades on in that room!
It's experimental as for overall cost effectiveness. I found the results (smoke test wise) as very good!
I am basing this on my and a cpl other cohorts grows. One of them does massive plants, with supplemental side lights to. Something "I" don't care for.
ttystikk
Well-Known Member
I've developed a system that integrates LED lighting with the HVAC system and reduces overall energy usage by over half- not just lighting but HVAC too.
That accelerates the return on investment substantially over just upgrading the lights.
Dr. Who
Well-Known Member
Got my attention.... I'll ask more about that now...
So how about an abstract on that....please?
Budley Doright
Well-Known Member
Still using water cooled heat sinks?
BarnBuster
Virtually Unknown Member
FWIW, saw this paper today about LED lighting
"The Impact of Light Intensity and Spectrum-Tuning on Cannabis Yields"
"The Impact of Light Intensity and Spectrum-Tuning on Cannabis Yields"
dandyrandy
Well-Known Member
If I were in a legal state I'd build a greenhouse.
hillbill
Well-Known Member
@BarnBuster, COBs and Boards would be what is called comodotized in the study. However, it does not seem authors are very familiar with newer solid state lighting.
Lots of fall off noted in intensity with the single light point HPS.
Initial cost of investment in LEDs has dropped precipitously over the last few years as efficiency has skyrocketed.
Lots of fall off noted in intensity with the single light point HPS.
Initial cost of investment in LEDs has dropped precipitously over the last few years as efficiency has skyrocketed.
Thundercat
Well-Known Member
Well that was a good little read. Honestly what I took from it is it doesn't matter as much which light you put over your plants if you can get them as close as possible to 1500ppfd. Which is basically where I was on this whole thing after reading this debate for the last 10 years online, and the research for both sides along the way.
The thing I think is cool about LED is taking my same 1000 watts, or maybe even more, and spreading it all the way around my plants so there is no hot spot to burn them. Everyone is always talking about efficiency, fuck that, lets talk about putting as much light as possible on these plants to produce as much bud as possible. I liked the articles break down of the yield increase vs cost of electricity for the extra wattage.
The thing I think is cool about LED is taking my same 1000 watts, or maybe even more, and spreading it all the way around my plants so there is no hot spot to burn them. Everyone is always talking about efficiency, fuck that, lets talk about putting as much light as possible on these plants to produce as much bud as possible. I liked the articles break down of the yield increase vs cost of electricity for the extra wattage.
hillbill
Well-Known Member
Epiphanies on this happen everyday. Most efficient light source makes more light per watt and therefore the most yield per kwh. And white is fine. Just so happens the light put out by white LEDs is of full and useful spectrums.
Thundercat
Well-Known Member
I'm all for more efficient light making it more affordable to blast your plants with maximum light. If your a small tight budget grower in a place with high electric costs, cool run as little power as you can for the most amount of light. It kills me seeing guys dimming down their lights and claiming the plants can't handle it. The sun puts out way more light then most people run in their gardens. If your not a small budget grower, then my attitude is turning the lights up, and lets try to replicate the sun! If that means dimming them when plants are little and working them up to full power sure, but its about using that power, not turning it down to be efficient.
hillbill
Well-Known Member
I happen to run white LEDs and COBs at high intensity 10/14 for flower which the intensity and possibly very full spectrums make possible. The study above seems to refer to full spectrum LEDs meaning the blurple (pink) panels with 9 or 11 or more bands of individual diodes. White phosphor LEDs however provide very useful and truly full spectrums in several k ratings. Actual combined k rating here in flower would be about 3700k.