DocktaGreenThumb
Active Member
Thats very true. But we tested at 2ft and 3ft and the LEDs lost about 25% lux compared to the Ushios. We didn't want to believe it, so we went to home depot and grabbed another meter...same damn shit
The age old question HPS, MH vs LED
- Thread starter Houstonhydro
- Start date
You knocked it out the ballpark with this one
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Johnny Lawrence
Well-Known Member
Let's just round up and call the Spyders $1500 each. You had 6 of them, so that's roughly 9k. You're saying that the rest of the room cost an additional $5k.
So then, how do you build a "top of the line", 6 light setup for $1500? Were the lights used? Did you have no intake or exhaust fans? No AC? No CO2? No ducting? Why didn't you get two of the largest carbon filters in the world for this room too?
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jdog127
Well-Known Member
Just giving the people what they want! Some call me a hero but I say nay! Just doing my job folks.
***Fly's of into the night***
Prawn Connery
Well-Known Member
That's a pretty sweeping statement. Which is obviously wrong. If everyone here had "good" LEDs (and knew how to grow), there would be fewer arguments.
For the record, there is nothing wrong with saying "HPS is still king" – apart from the statement itself, of course. Because I don't see any proof of it in this thread.
If you're going to make statements like that, then at least back them up. Saying it doesn't make it true.
Again for the record, I – like many other LED growers – grew with HPS for almost 20 years. I have friends who have grown with HPS for over 20 years. One of the things we now have in common is we all grow with LED.
Does anyone here honestly think commercial growers would be using LED if it didn't work? Why would they waste their time and money? Even if personal choice does play a part in decisions, the physics don't lie: LEDs convert more energy to light and less energy to heat – that makes them more efficient than HIDs right there. There is no argument – countless sphere and goniometer tests have proven it.
Indeed, one of the other reasons LED beats out HID efficiency is because HIDs produce their light in 360-degrees and most growers use reflectors that reflect 75% of the light that a HID produces – the other 25% being direct light fro the bulb (unless you grow vertically, which shines almost 360-degrees of light directly on the plants).
LEDs produce all their light in one plane at a 120 degree angle – so most of it hits the plant directly and is not bouncing off a reflector or tent wall (there are some wall losses, like there are with all lights).
Not only that, LED has the potential to provide a better spectrum. Again, the science is incontrovertible: different spectra produce different morphogenetic responses in plants that have the potential to provide better yields and quality.
And finally, there is the small fact that LED technology is progressing all the time. LEDs get cheaper and more efficient every year – just like every other semi-conductor. That means they are becoming even more efficient than HID technology that has not improved efficiency much in past decades (as it still uses the same basic design – double-ended bulbs being the main advancement). Even CMH has been around for 25 years – we were talking about using it back in 2000 – but it took growers a long time to accept that CMH could rival HPS and even beat it in some areas.
Much like the debate about LED right now
The moral of the story is: Produce your facts, or state your opinions – but don't confuse your opinion for fact. Because in the real world, science talks and bullshit walks.
Prawn Connery
Well-Known Member
LUX is not the same as PAR. There's your mistake right there. LEDs produce more PAR for the same LUX as HPS, as LUX is weighted towards the green spectrum and LEDs produce more red and blue light.
Lumens are for humans. PAR is for plants. Get yourself a PAR meter or go home. Even if you have a LUX conversion for the LED (and HID for that matter – neither are sunlight), cheap LUX meters are notoriously inaccurate. I have measured LUX meters against my spectrometer/PAR meter and they are always out – some by a factor of 20% or more.
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Gond00s
Well-Known Member
wanna donate me a par meter
Prawn Connery
Well-Known Member
It doesn't really matter because it's a LUX measurement – which doesn't mean anything without a conversion ratio.
You can all do the conversions here. Just remember these are generic conversions and specific LEDs will have different conversion rates:
Convert Lux to PPFD - Online Calculator | Waveform Lighting
Online calculator to convert illuminance (lux) to PPFD (micromoles per second per meter squared).
What you will notice is that LED produces more PAR for the same LUX as HPS – but is actually quite similar to CMH, as their spectra are closer.
Let's see the facts gentlemen, not pseudo-science.
a mongo frog
Well-Known Member
Show us your latest dried bud shots with your shit lights then. My latest harvest nugs are not hard to find here on this site. Posted other day. Or show us Or Grows dried bud shots from his awesome 16% thc shit grow. Show some of your dried product.
Prawn Connery
Well-Known Member
Haha! You can buy an Apogee PAR meter for US$500 or less if you look: https://www.apogeeinstruments.com/quantum/wanna donate me a par meter
Mine cost $1200, as it has a built-in spectrometer: https://lightingpassport.alliedscientificpro.com/
Prawn Connery
Well-Known Member
I haven't seen any of your bud shots. Not a single one. All I see are your inane posts everywhere.
And I'm not going to argue with a known fuck-wit. You're comments are always found wanting. There are plenty of LED bud shots right here - or are you fucking blind as well as stupid?
The age old question HPS, MH vs LED
For week 6 those” tiny “buds are probably better than what ever make believe shit you have in mind hater Hahaha when you throw 1100 ppfd across your whole canopy the buds get much bigger
www.rollitup.org
Now please quantify your statement that "everyone" has used good LEDs. That's right, you can't.
Mongo by name. Mongo by brain.
Prawn Connery
Well-Known Member
Actually, the High Light test was 19.1%. The control tent using Quantum Boards was 16.6%.
THC, CBD, Terpene test results – UVA vs UVB vs none
As some of you might know, former member Or_Gro did a side-by-side comparing three different types of LED boards with supplementary UV reptile bulbs. He also did a control grow without any UV at all. The test results are interesting because UV clearly works – an increase of almost 20%! But...
rollitup.org
So I'm assuming you get your own buds THC/CBD and terpene tested? What were the results? Please post them up. Or are you still full of shit as usual?
Everything I post I can prove. What have you proved lately?
a mongo frog
Well-Known Member
You know i have. And I've shown all of them over the years. Fuck i even have safety results. Required where i live.
Attachments
Prawn Connery
Well-Known Member
LOL! So that shitty little scrap of paper dated 2015 is supposed to be a cannabinoid and terpene test is it? This is what an actual test looks like.
Now where are all these massive buds you think you grow? I had a look at your dried bud shots – they're about the size of your dick, which is about the size of the end of my thumb.
Put up or shut up Mongoloid.
Now where are all these massive buds you think you grow? I had a look at your dried bud shots – they're about the size of your dick, which is about the size of the end of my thumb.
Put up or shut up Mongoloid.
Prawn Connery
Well-Known Member
This is one of my buds grown under LED. Yep, that's the end of my thumb for reference.
hillbill
Well-Known Member
Years ago I tried leds and about run out of smoke(before I started vaping). Went back to hps and cmh400w until I bought a a51 xgs190 and then a sgs160 with Cree white and some with white and red diodes. Added several white cobs also. HPS has been gone for almost 7 years.
Not bought a bulb since but back then the higher quality white grow lights were $4 a watt or more and new ones now are much better still. And very much less expensive.
And no fans!
Not bought a bulb since but back then the higher quality white grow lights were $4 a watt or more and new ones now are much better still. And very much less expensive.
And no fans!
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gwheels
Well-Known Member
put down the club man....cant we all just get along
Prawn Connery
Well-Known Member
LOL! I would gladly "hit" you all with it if I could – it was a very nice smoke.put down the club man....cant we all just get along
My real issue is with known bullshit artists. Mongo posts a supposedly a 27.8% THC strain grown in his lil ol'd tent with his lil ol' 600W HPS printed on a scrappy piece of paper which would have won just about every Cannabis Cup around the world in 2015. This, grown against the best labs in the world with the best strains in the world.
The Strongest Weed Strains on Earth
At the start of 2016, we examined the six HIGH TIMES Cannabis Cups from the previous year and the thousands of entries they tallied. The goal? To ascertain exactly which of the entries deserve to be called the strongest strains on planet Earth. There are many types of weed strains with varying...
hightimes.com
Does anyone else suspect it's either a fake report or a bogus machine?
