ttystikk
Well-Known Member
Just ONCE. After that, everything is cheaper. And better.
LEC - Light-Emitting Ceramic
- Thread starter potroastV2
- Start date
ttystikk
Well-Known Member
Show me better and I'll use it.
MeGaKiLlErMaN
Well-Known Member
It's not better per say, but it was cobs, just search 1.6g/w you will see a lot of results. What tech are you running currently? 3590?
ttystikk
Well-Known Member
Most of my LED is CXB3590 3500K CD bin.
There's a couple quantum boards, and I'm about to take delivery of a pile of RAZOR 250 bars. These will allow me to retire HID for good.
MichiganMedGrower
Well-Known Member
How much more proof do you need? You saw my journal every day at the other site. I can produce proof of everything I said.
And you know the only witness is extremely impressed.
Where is your proof? You have a very long journal of you talking and very few pictures.
On both sites...............
Do you prefer the word exaggerator to liar?
and I just wanted you to stop pretending when you don't know the answer. And I still would like that. But it's an open forum. So talk all you want. But now you deal with it.
You make the claims constantly. Let's see some more pics. I would think you would be proud to show what your cobs can do.
Johnny Lawrence
Well-Known Member
I'm finally getting around to having a couple of entirely(or mostly) LEDs, and I'm not experiencing much larf. No more so than my HPS room. I thought that would be an issue as I made the switch to LEDs, but it hasn't been. I'm not even experiencing larf in my "hand-me-down" room - only 2 COBs in there, the rest is older, single diode tech.
since1991
Well-Known Member
Iam not messing with any light ya gotta build yerself. I will wair till cobs are on the shelves at an affordable price. Then i will see for myself. As of now...cmh (lec) lamps are in my sights. Retiring my Gavitas soon. I might still run em...but not at this spot. The amount of ac you need for a bunch of them is ridiculous.
TheChemist77
Well-Known Member
ive hit 1.63 gpw with 2 and 3 315 watt lec's over a 4x6ft f&d table on 3 different runs now... my current is just finishing, ill pull and dry and weigh over the next few days, i added 2 100 watt citizen cobs on this run, my new run will begin in about a week i hope the led lights perform as i hope,, my plan is to run 2 315's for the first 2 weeks of bloom then turn on the 2 led's for the following 6 weeks, next ill run all lights the hole way and see my gpw average..any less than 1.6 gpw and the led was a waste of cash..
MeGaKiLlErMaN
Well-Known Member
If it's the same strain you should be happy as long as you're running at a decent efficiency. If it's at like 49% or below well we will see how it goes, if it's above you should be set.
To be fair 630W getting 1.6g/W in a 4x6 (1sqft short of a 5x5) with LEC isn't unheard of getting around that. The benifit with cobs will always be their life time at between 50,000-100,000 hours.
With LEC/CMH being around $350 for 315W it's hard to argue them not being worth it any more
ttystikk
Well-Known Member
My quality improved quite a bit between CMH and LED.
MichiganMedGrower
Well-Known Member
Ok. I have never used led. And I never debated its validity. But I do know from experienced growers that they lack penetration compared to my HPS.
And in my set up and house they would cause me to need lights on heat in my growroom. Which is really expensive with propane heat out in the woods. So I added LEC.
It's the 315 LEC that isn't powerful to penetrate my already HPS bushy plants. I am going to try rotating them all evenly under both kinds of lamps to compensate.
But the LEC has increased plant health and potency from the better spectrum and uv so it stays.
Johnny Lawrence
Well-Known Member
I've been doing this for years and built multiple setup, both for myself and for friends, running SE 1000s and 600s. I still have a 4x4 with an aircooled six. My biggest room, a 5x9 has a 600 centered, with 315s at each corner. And then 2 more rooms that are LED, and I'm telling you, there is no difference in the amount of larf between the various flower rooms. The "LEDs can't penetrate" thing is a myth.
This spring I'm hoping to replace the 600 in the 4x4. I want to grab a vertical 315 hood from Phantom, and then build a custom frame around it with 50 watt Citizens at each corner. It should at least match the 600, while running 100 watts less.
MeGaKiLlErMaN
Well-Known Member
I have grown with both and HPS has some self inflicting issues.
LEC is great and efficient enough to talk about but it lacks coverage area with a 315W only covering 2.5x2.5, so that means more lights and more bulbs.
True, HPS is a good light for what it is, but the reason you need "penetration" is because of the spectrum itself! It's a catch 22 with the light. Now if you take a look at my signature or my side by side thread you will see that the LEDs have not stretched nearly as much but also stay much lower in the Scrog. So it doesn't required penetration in the first place.
Also in my signature I demonstrate that penetration doesn't go past the first leaves anyways due to the light being absorbed.
The cobs don't have a penetration problem then have a cost problem. The old diodes have A lack of coverage just like the HPS lights do, it's not even and can't get to that state without multiple light sources which is why COBS will be better for a long time till the tech evolves in some way.
MichiganMedGrower
Well-Known Member
The only thing I disagree with here is that light passes through the leaves in many wavelengths. They do not absorb it all at the top. So I believe it is the wattage and the intensity of the LEC 315 just like if I use a 400 MH or even 400HPS. No big dense lowers in my room. And they went right to double bulb reflectors to compete. 630 watts.
MeGaKiLlErMaN
Well-Known Member
The issue with that frame of thought is that you assume that more watts equals more penetration when thats not the case with cobs and honestly it doesnt need to be because of how much more usable light gets to the canopy compared to a DE HPS.
As for the penetration thing. One leaf dropped it from 1400PPF to 100PPF, no way that the light go past the first set of leaves, this was demonstrated in my signature. I can do it for the HPS and DE HPS if that will help you see what Im saying.
ttystikk
Well-Known Member
Defoliation.
MichiganMedGrower
Well-Known Member
I will check out your sig info when I have some time and I will recheck where I learned what I wrote. This is very interesting. As the Universities are still showing basically (and I realize this terminology is actually incorrect but explains the point) lumens beat spectrum as the plant transfers photosynthesis to the strongest wavelength regardless.
Dynamo626
Well-Known Member
Acording to my reading different chlorifill (pardon my spelling) are excited by different spectrium though most react to blues and reds. Also blue light particles cary more energy than red. Its funny how different schools conduct the same studdies with different results. Not just when it comes to light but with everything. It shows how little we really know
Dynamo626
Well-Known Member
Exactly total power trumps spectrium but for best results have both