Cold$moke
Well-Known Member
Ha ha no worries here about that lol
HLG550 vs Gavita? Anyone with experience with either/both?
- Thread starter kdt15
- Start date
Cold$moke
Well-Known Member
This is half the room about halfway done
So far im pressed with how even the canopy grew with a single light source so high up lol
I was expecting the outer edges to be much taller
Granted fellas im not showing my grow off like its tha cats ass haha its not just me playing around
So far im pressed with how even the canopy grew with a single light source so high up lol
I was expecting the outer edges to be much taller
Granted fellas im not showing my grow off like its tha cats ass haha its not just me playing around
skoomd
Well-Known Member
Well not you specifically, but a lot of HPS users like to compare DEHPS lights to LEDs that manage to only equal about a SEHPS. But may I ask, if you dont defend DEHPS than how/why do you defend SE HPS so much lol? If DEHPS isnt defendable against LED, then how would single ended be?
Many growers do flower in their veg room/tent... and you'd be silly to veg under DEHPS.
Commerical grows sometimes do veg under HPS/DEHPS to make lankier plants because it's easier to see what's going on on the plant. But id say most use MH or T5s or even LEDs for vegging. Compact plants = more efficient use of space
LED and CMH trade blows in side by side lab tests, the CMH packs some good amounts of uv and blue and the LEDs can pack a good amount of blue as well, especially 4000K and up. Blue light and UV light are proven to boost trichome levels, sometimes a LOT. Doesnt always mean a huge THC boost, but terpene wise it's a big difference. The reason CMH doesnt always win is because it's ran at fairly average intensity levels (315w in a 3x3 space is normal). A 315w 1.6 umol/j CMH in a 3x3 wont nessasarily frost up every time as much as a 315w 2.4 umol/j 3500k LED in that 3x3 space due to intensity.
HPS on the other hand lacks pretty much any decent blue light completely. And on top of that, the IR they emit gets absorbed a ton by dense, moist buds (bigger the worse) underneath the light. Take an ir gun reading of some colas under an HPS, you'll find they're 10-15f warmer than ambient. RIP terpenes!
Lab tests seems to prove this time and time again.
edit: Oh I forgot to give one....
http://www.hortidaily.com/article/39002/Academic-research-into-HPS-vs.-LED-for-cannabis-cultivation
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good experiment your canopy looks a little less full than my friends that failed hopefully those fatten up for you im sure you will have plenty of bud if your growing for personal stash
Cold$moke
Well-Known Member
Yep i dont depend on selling it just seeing what kind of numbers i can get with the single source
Before i add leds so i have a baseline.
Its roughly half done so she should fatten up
If i can hit 4 lbs on 850w i would be happy but i doubt ill hit that this run. We'll see
My rent doesnt exist so i wont lose my place haha
i dont need to explain myself you sound like a damn viparspectra ad people like you give led a bad rep. have you ever grown? dehps work stop with the spectrum bs.How so exactly? LOL. You arent gonna cover a 5x5 grow space using a 1150w DEHPS, so I figured that would be a good build that would. And yea....
1000w of those samsung strips is right at 2.2 umol/j after losses n shit. So 2200 PPF output.
A 1150w DEHPS right at 1.8 umol/j has a 2070 PPF output. Then there's reflection loss from the hood, plus refraction loss through the glass. 10-15% reduced PPF easy, so 1800PPF.
Obviously the LEDs (3000k) would have a superior spectrum overall. Both for full cycle use and just in terms of how much red/far red/green wavelengths are in it, which are the main photosynthetic drivers.
Here's a eye hortilux 1000w de SPD
And 3000k LM561C SPD
The DEHPS spectra is just dominated by yellow wavelengths, no good. Therefore, all of the other wavelengths relative to it are quite low. Sure there's a decent amount of red, but the 3000k LED has way more red spectra, and especially notable is that it has 4 times the relative amount of 660nm far red, the most important wavelength. Overall, there's a significant amount more red on the 3000k cob than the 2100k DEHPS.
Oh, and green is nearly as photosynthetically active as the red in intense white light. And it penetrates leaves like butter. HPS has no green. Scientifically speaking, the LED has a more photosynhetically active spectra than the DEHPS. And it still packs plenty of blue light which (along with UV) has been shown time and time to increase trichome production.
So you combine that with the raw 20% higher PPF output on top of it, and it's a clear winner....
And while most people would be crazy to run a DEHPS in a 5x5 (even AC/DE), let alone bumped to 1150w, it doesnt even provide full intensity in that space. While the LEDs would emit about as much heat, they would provide a much superior intensity and spectra overall and will take a 5x5 to 4 pounds.
i promise you will yield more with the same light in a 5x5 tried to tell my friend this he didnt listen said the same exact thing as you when i saw his grow halfway done. not trying to be a dick just seen almost this exact situation play out. but hey rent free means your almost all profit! my guess is you will barley hit 2 lbs buds will be kinda fluffy and a ton of larf unless you lollipoped them. 4lbs is impossible for you imo. again not trying to be a dick but you should be more realistic just so your not as dissapointed. definitley throw some updates up let us know how it goes!Yep i dont depend on selling it just seeing what kind of numbers i can get with the single source
Before i add leds so i have a baseline.
Its roughly half done so she should fatten up
If i can hit 4 lbs on 850w i would be happy but i doubt ill hit that this run. We'll see
My rent doesnt exist so i wont lose my place haha
skoomd
Well-Known Member
Lol. I was talking about an LED setup for a 5x5 that would be superior to a DEHPS because a dehps, even cranked to 1150w isn't capable of getting a 5x5 to optimal intensity.
The LEDs have more output and a better spectrum, and the price, all things considered, is essentially the same as the dehps setup.
That is all. Never said dehps doesnt work, i just presented a better alternative for a 5x5 tent than it.
Cold$moke
Well-Known Member
For sure
Lol yea i been growing for a while like i said this is me just getting base lines for new room lights
First run with the strains even though they are monster cropped (long story)
New nutrients new light ect ect .
Like i said its definitely not a cats ass grow haha
But doesnt bug me a bit and i get what you mean by concentrated light in a smaller area
I just wana see how close i get before i add more lights
Lol yea i been growing for a while like i said this is me just getting base lines for new room lights
First run with the strains even though they are monster cropped (long story)
New nutrients new light ect ect .
Like i said its definitely not a cats ass grow haha
But doesnt bug me a bit and i get what you mean by concentrated light in a smaller area
I just wana see how close i get before i add more lights
Colo MMJ
Well-Known Member
Can the HLG QB's match your 1000 watt HPS on yield? Is your HLG 4 boards? Thanks.
Cold$moke
Well-Known Member
That would be good cause thats just half the room haha 2and 2 make 4 if that's what you meant
Been at this for too long to get dissapointed when im just testing stuff sometimes it works sometimes it doesnt either way i always have smoke
It could ve fluffy wont know till its done
But i shouldnt have any larf my canopy is only a foot or so thick at the thickest points
OneHitDone
Well-Known Member
skoomd
Well-Known Member
Have you ever used ANY Hps lamp bro??
Admittedly not in a very long time, but did you even test it for yourself?
This is the surface temp of a cannabis leaf under a 1000w HPS @ 24" away
75f ambient
84f ambient
Imagine what a bud with all of their extra mass and water content would be at if the leaves are that much higher.
OneHitDone
Well-Known Member
Again you have no idea what is happening in the real growing world.Admittedly not in a very long time, but did you even test it for yourself?
This is the surface temp of a cannabis leaf under a 1000w HPS @ 24" away
75f ambient
84f ambient
Imagine what a bud with all of their extra mass and water content would be at if the leaves are that much higher.
Many west coast growers (which arguably set the standard for cannabis growing in the US) live in coastal zones where day time temps never even reach the overly hot 88.7 of your example.
And we run at night bro!
Peeps be setting up a whole garage of either SE HPS or a few bucks more for DE's and still aren't in it much more than 1 of your lights all in. And they are growing pounds of the dank.
Stop all this # research shit or start your own thread - "The Facts of growing by skoomd"
That way you can preach to those who actually want to listen to what you are saying
hybridway2
Amare Shill
What you're showing is the main reason why his transpires more/photosythesizes faster & grows bigger buds. Just so you know. I welcome the 10• increase & have used it to my advantages & technique since my 3rd grow.Admittedly not in a very long time, but did you even test it for yourself?
This is the surface temp of a cannabis leaf under a 1000w HPS @ 24" away
75f ambient
84f ambient
Imagine what a bud with all of their extra mass and water content would be at if the leaves are that much higher.
skoomd
Well-Known Member
Of course increased leaf temp is important, hence why LEDs that dont put off much IR need higher ambient air temps than HID.
But a bud has a lot more mass and water than a leaf, and it doesn't take much more than those temps to start to really evaporate the terpenes. Seriously, just compare the smell of your plants in flower at say 75f and 85f air temps. It will smell way more at 85f because the volatile terpenes are evaporating away much faster.
Evil-Mobo
Well-Known Member
Again you have no idea what is happening in the real growing world.
Many west coast growers (which arguably set the standard for cannabis growing in the US) live in coastal zones where day time temps never even reach the overly hot 88.7 of your example.
And we run at night bro!
Peeps be setting up a whole garage of either SE HPS or a few bucks more for DE's and still aren't in it much more than 1 of your lights all in. And they are growing pounds of the dank.
Stop all this # research shit or start your own thread - "The Facts of growing by skoomd"
That way you can preach to those who actually want to listen to what you are saying
I called him out before and then was attacked by the rest of the LED crew. Everyone should just add him to their ignore list so we can all move on. It's very apparent he's not going to stop with his BS antics. He's just a data sheet Nazi and google copy/paste grower. Using other people's info and pics in his post.