Hahaha when you throw 1100 ppfd across your whole canopy the buds get much bigger
The age old question HPS, MH vs LED
- Thread starter Houstonhydro
- Start date
evergreengardener
Well-Known Member
those arent harvested they have 2-3 weeks left
evergreengardener
Well-Known Member
first two pics are dry bud already harvested bottom 3 are all the same plant about a week before chop
evergreengardener
Well-Known Member
To be clear for anyone following Led tech can and will grow good buds, Good led that is timber, hlg, cobs, boards etc..
if around $100 is your budget dont buy shit Blurple lights especially bestvas just go with Hid or save for the good led. youll be better off
if around $100 is your budget dont buy shit Blurple lights especially bestvas just go with Hid or save for the good led. youll be better off
See these are some chunky buds this is what happens when you use proper led not that blurple crap
evergreengardener
Well-Known Member
those are actually under hps bulb but quality led can grow bud like that
What strain.
Looks good
Interested in knowing the setup still.
Because venting won't cool the room. Your cooling the light ex amount of degrees.
If you went from hps down to led whatever you where cooling the room with your hps should easily cool the room with LEDs with that closet I'd assume at best you have a 400 watt LED?
If you didn't have cooling and just vent then you had heat issues. Point is I have never seen a viable study show led produce denser buds more terps or thc. Its bro science.
Hence the suggestion you altered the environment with your much cooler lights bringing heat down which gave you a better product or you spent $1200 on it instead of $200 on a 1k hps and feel embarrassed and just defending a non refundable purchase.
I did see John test his hps led and CMH and his CMH had higher thc but you say its other way around. I think you made an expensive purchase and you just want it to work but $200 would have gotten you 2 per of quality and the rest could have went to the environment or some Archive genetics
rustyshaclkferd
Well-Known Member
Nice macro
Always so hard for me to get my field of view and field of focus the same...
.Smoke
Well-Known Member
Just read this.
Pretty good objective points on both sides of the argument from PL Light Systems.
pllight.com
Pretty good objective points on both sides of the argument from PL Light Systems.
P. L. Lights Systems Expert Articles: LED or HPS for Growing Cannabis? What Lighting Source Should I Use for My Licensed Cannabis Grow? | P.L. Light Systems
Selecting the right light for cannabis grows is complex. Here we unpack the difference between LED and HPS for growing cannabis.
pllight.com
rustyshaclkferd
Well-Known Member
I read the last paragraph...is it a advertisement for PL. LightJust read this.
Pretty good objective points on both sides of the argument from PL Light Systems.
P. L. Lights Systems Expert Articles: LED or HPS for Growing Cannabis? What Lighting Source Should I Use for My Licensed Cannabis Grow? | P.L. Light Systems
Selecting the right light for cannabis grows is complex. Here we unpack the difference between LED and HPS for growing cannabis.
Hust17
Well-Known Member
Funny you mention DE Gavitas...
Same crap as I spewed in the last thread... that is, most LED companies are trash and you should be very skeptical about almost anything they say. That said, a few companies have a history in the game and are offering a warranty that covers your initial investment over hps. If you can’t get a 3 year warranty (Samsung, CLW (5), BlackDog, etc) don’t risk it imo. And just cause it says warranty absolutely does not mean they will honour it. The 3 I listed will.
That said as well, I made my own Cobs and never regretted it, but I wasn’t referring to DIY above. Cheers. Because I know Timber and alike are making some bangers.
Grow Lights Australia
Well-Known Member
Well there are studies out there that show exactly that: https://www.karger.com/Article/Fulltext/489030
The condensed version is, LED has more blue and produces more cannabinoids than HPS. It's not bro science. It's real science.
We've also done other studies comparing different LEDs with varying amounts of blue, near-UV, UVA and UVB to see how their cannabinoid and terpene profiles change and the results were interesting: https://www.rollitup.org/t/thc-cbd-terpene-test-results-uva-vs-uvb-vs-none.1001617/
Yields are a no-brainer: watt-for-watt LED beats HPS, and this is being proven over and over again in grow rooms around the world. Most people don't realise how good LED can be until they try it themselves. And almost no-one goes back to HPS after trying it.
I agree that LED manufacturers only have themselves to blame for people's skepticism. There have been a lot of bullshit claims about LED in the past and when they have failed to live up to the hype growers have rightly rubbished them.
But times have changed, and LED technology is now way ahead of HID technology. LEDs are becoming cheaper and more efficient all the time. And there are some decent LED companies in the market who are determined to keep it real and not make exaggerated claims knowing that it only harms the industry. They're out there if you look for them.
diggs99
Well-Known Member
I tagged Prawn earlier cause i couldnt remember your username.Well there are studies out there that show exactly that: https://www.karger.com/Article/Fulltext/489030
The condensed version is, LED has more blue and produces more cannabinoids than HPS. It's not bro science. It's real science.
We've also done other studies comparing different LEDs with varying amounts of blue, near-UV, UVA and UVB to see how their cannabinoid and terpene profiles change and the results were interesting: https://www.rollitup.org/t/thc-cbd-terpene-test-results-uva-vs-uvb-vs-none.1001617/
Yields are a no-brainer: watt-for-watt LED beats HPS, and this is being proven over and over again in grow rooms around the world. Most people don't realise how good LED can be until they try it themselves. And almost no-one goes back to HPS after trying it.
View attachment 4443868
View attachment 4443870
View attachment 4443871
View attachment 4443869
View attachment 4443873
I agree that LED manufacturers only have themselves to blame for people's skepticism. There have been a lot of bullshit claims about LED in the past and when they have failed to live up to the hype growers have rightly rubbished them.
But times have changed, and LED technology is now way ahead of HID technology. LEDs are becoming cheaper and more efficient all the time. And there are some decent LED companies in the market who are determined to keep it real and not make exaggerated claims knowing that it only harms the industry. They're out there if you look for them.
Good post, ill remember the name
Grow Lights Australia
Well-Known Member
No worries mate. I think we just have to accept the HPS vs CMH vs LED debate will continue for some time until the technology has completely proven itself.
The funny thing is, I remember growers talking about CMH lamps back in the early 2000s and no-one wanted to give up their HPS lamps for them and all of a sudden, like 5 years ago or so, everyone started buying CMH lamps and seeing the results.
A lot of the time, people just need to try things for themselves to be convinced.
Grow Lights Australia
Well-Known Member
The Bud shot is Acid by Paradise Seeds (NYCD hydbrid). The first room is full of a Chimera strain called Mental Floss (Blueberry x mystery indica). The 4x4 tent that's full of buds is a strain called Amnesia OG (Amnesia Haze x OG).
LEDs come in all shapes and sizes but the one thing they all have in common is that the good ones work just as advertised.
Here's another tent full of skunk/afghan crosses. These are a couple of different grows in the same tent. I'm sure the growers don't mind me posting these.
