This for all the LED haters! Is that blurple I see kicking HID butt?

[MichiganMedGrower]

It is interesting still.
Because a single ended super hps doing the math atm, puts out 90000 lumens. Works out to 150 lumens per watt.
Fairly comparable really, and if de fixtures have 30% more output on average than single ended bulbs, it has to be really close to the LED watt/watt.
I found it really interesting in the video about the McCree curve as well. How a PAR meter doesnt measure the type of PAR. Only how much there is.
Its really exciting the LED's are headed in the right direction.
Just wish they'd improve on the price.....
Also the quality is few, and far between.

Thanks for the link man.



Edit: excuse me, DE is 10% more efficient than single bulbs.
My mistake.

I have read up to 30% more efficient than a single ended.

And with a better spectrum and longevity.

I wish I had higher ceilings. I would use 750’s.

 

[ANC]

You get par meters calibrated for sunlight and for artificial light if I remember correctly... I think Apogee has some youtube vids on the topic.

 

[growingforfun]

It is interesting still.
Because a single ended super hps doing the math atm, puts out 90000 lumens. Works out to 150 lumens per watt.
Fairly comparable really, and if de fixtures have 30% more output on average than single ended bulbs, it has to be really close to the LED watt/watt.
I found it really interesting in the video about the McCree curve as well. How a PAR meter doesnt measure the type of PAR. Only how much there is.
Its really exciting the LED's are headed in the right direction.
Just wish they'd improve on the price.....
Also the quality is few, and far between.

Thanks for the link man.



Edit: excuse me, DE is 10% more efficient than single bulbs.
My mistake.

I agree, a super hps bulb is by far my choice. Is so cheap for fantastic results. I'm running a brand new super hps 1000 right now. I stand behind them 100%

 

[MichiganMedGrower]

I agree, a super hps bulb is by far my choice. Is so cheap for fantastic results. I'm running a brand new super hps 1000 right now. I stand behind them 100%

I’m sure happy with my 600 supers.

 

[Lucky Luke]

I LOL at the title.

A Blurple kicking a HPS...lol

Decent LED lights are frkin awesome, QB are the go and would work out cheaper than a pre built blurple.

OP, what LED are you running? Have you a vested interest in the thread?

 

[growingforfun]

I LOL at the title.

A Blurple kicking a HPS...lol

Decent LED lights are frkin awesome, QB are the go and would work out cheaper than a pre built blurple.

OP, what LED are you running? Have you a vested interest in the thread?

Are you familiar with kingrow1? It's basically the same person except the OP is on about burples.... its literally impossible to talk to him. He will say the word science repeatedly. If you present him with any facts he will ignore them. He will also do his best to shittalk you the whole time.

I dont think he has a vested interest, just a love of alcohol and online rants.

 

[coreywebster]

Who cares if its purple or white. It still beats HID! Its the technology thats important. but you will just want to complain about something, get off the purple issue. its about LED's (This is NOT from youtube richard)


Academic research into HPS vs. LED for cannabis cultivation
Cannabis cultivators find themselves in a dilemma called HPS (high pressure sodium) lighting versus LED (light emitting diode) lighting. On the one hand, HPS has been around in agriculture for a long time and has proven that it can successfully grow a wide variety of plants. On the other hand, LED, as the latest entrant to the horticultural lighting market is living up to its hype. What cannabis growers are concerned with are quick growth cycles of cannabis plants that yield many large flowers, containing high levels of THC (Δ-9-Tetrahydroannabinol), CBD, and other valuable secondary metabolites. Furthermore, growers need a lighting system that produces consistent results time after time as well as proven light recipes. Up to recently, no academic research had been done to compare the capabilities of these two lighting sources for growth of cannabis.

Photo taken at MJardin, Denver, CO. Plant grown under the Valoya NS1 (sunlight) spectrum.

An academic research titled ‘The Effect of Light Spectrum on Cannabis Sativa Morphology and Cannabinoid Content’ (G.Grassi, G.Magagnini, S.Kotiranta) has been presented at the Cannabinoid Conference in Cologne in September 2017 which presented a two-year long comparative study of HPS versus LED lighting for cannabis cultivation.

The results show that the morphology of Cannabis sativa can be manipulated with light spectra. Plants under HPS treatment were taller and had more total biomass dry weight than treatments AP673L and NS1 (spectra by Valoya, the Finnish manufacturer of LED grow lights). HPS light spectrum is low in short wavelength irradiation (blue and UVA) and rich in green, yellow, red and IR in 800-1100 nm irradiation. This type of wavelength combination resulted in longer internodes and therefore taller plants with more stem dry weight. As for the compound accumulation in the flowers, treatments NS1 and AP673L had higher CBD and THC concentrations than HPS treatment. Treatment NS1 had the highest CBG Level. Spectrum NS1 is rich in short wavelength irradiation (blue and UVA) and had the highest R:FR ratio of all tested spectra. In addition to high cannabinoid content, spectrum NS1 enhanced the compact growth habit of the measured plants. The research suggests that the lower wavelengths, blue and UVA, could contribute to the higher cannabinoid yield in treatment NS1 compared to AP673L and HPS, respectively. In the rounds of the research the amount of THC produced under LEDs ranged from 26-38% more than compared to the HPS treatment.

Three light sources were compared to each other. Spectra of the used light sources from left to right: HPS, AP673L and NS1.

Plants under LED spectra were more compact and produced more cannabinoids than the HPS light source.

For more information on this research please visit Valoya (booth #523) at the upcoming Marijuana Business Conference and Expo in Las Vegas. One of the paper authors, Ms. Kotiranta will be present at the booth.

For more information:

​

Valoya Oy, Finland
Tel: +358 10 2350300
[email protected]
www.valoya.com
Publication date: 11/9/2017

This research is from a company that make and sell LEDs.
We need to see studies from universities and other organisations that are not linked to the selling of any type of lighting.

It would of been a better comparison if they had used MH to veg the plants under, since that's what most HID growers would do.
It makes a huge difference to yield. There is far too much biased information out there. As soon as there is one point that can be brought into question the whole thing becomes discounted.

Why not do a side by side yourself and post the results?

 

[FriendlyGuy]

I still have my Solar Storm 880 I purchased 5 years ago but I havent grown in a few years. So its wrapped with a towel over it.. Spent 1800 for it.. I see it on amazon for 1,189 now... God dam great l.e.d...i knew I shouldve sold it before the price dropped

 

[growingforfun]

I still have my Solar Storm 880 I purchased 5 years ago but I havent grown in a few years. So its wrapped with a towel over it.. Spent 1800 for it.. I see it on amazon for 1,189 now... God dam great l.e.d...i knew I shouldve sold it before the price dropped

Its dropping for a reason. I'd list it on ebay asap

 

[growin-Jables]

that's funny......my yields are terrible using blurples......yields double easily when using CMH HID bulbs......never thought I would see someone naïve enough to actually believe Blurples could beat out HID.

 

[growin-Jables]

Its just flat out wrong, or its based on outdated data. Todays high efficiency white LEDS are far more than 30% efficient, reaching well over 200 lumens per watt - that's 33% more light per watt than HPS - even when converted to a PAR value.

and we all know that Lumens actually have VERY LITTLE to do with the amount of light a plant absorbs lol. Lumens are referring the the amount of spectrum seen by the human eye....not that plant.....you want PAR rating comparisons lol

 

[growin-Jables]

I yielded 25 oz. from 6 plants. using just one fixture. 630w cmh....yeah....blurples never gave me these results haha

 

[MichiganMedGrower]

I yielded 25 oz. from 6 plants. using just one fixture. 630w cmh....yeah....blurples never gave me these results haha

Super nice work! Looks fantastic. And great yield.

I have been wanting to compare 2 315’s to 1 600hps for a while. I only own one still and am testing it in veg. It is cutting down veg time by a week easy compared to t-5 fluorescents and growing thicker stalks and more branches and leaves.

My best per light grow was 24 oz with 4 plants under a 600w Hortilux super hps.

1 315 got me 15 oz so I am thinking 2 might get me close to a half pound more with some practice.

 

[growin-Jables]

I'm able to veg an entire 5x5 tent with a single 315w cmh using a 4200k bulb. those pics I posted was my last run. 6 plants in a 5x5. under 630w cmh. I bought that tent right as I was switching to flower. so I moved them from a 4x4 to 5x5. I could of fit 9 plants of I had veggies another 3 to add to that tent. the 630w covers a 5x5footprint. I'm testing a 9 plant run right now. because my math tells me if I yielded 25 oz. out of 6 plants in the same foot print. another 3 plants should net another 12 oz.. so technically I probably could of hit 37 oz. under just a 630w cmh.......people thing I'm bullshitting when I tell them that and as soon as they see the pics it's like a shocker to them. Cmh has been beat performing light ibe tried. I've done blurples , cfls, t5s , hps and mh*. only thing I have not tried are qbs and cobs. and now they have ceramic high pressure sodium which looks interesting. thank you for the compliments !

 

[growin-Jables]

Its not denial, its first hand experiance.

I've told you, I've used about every kind of led. From old school burple, several kinds of multi band UFOs, really. This isnt something I speak on from a position of zero experiance.

nothing is more factual to me than real life experience....its funny this kid seems so confident about blurples because the charts are showing better efficiency....not because of his real world experience. but basically taking other peoples word for it. That right there shows me an inexperienced grower lol

 

[growin-Jables]

Super nice work! Looks fantastic. And great yield.

I have been wanting to compare 2 315’s to 1 600hps for a while. I only own one still and am testing it in veg. It is cutting down veg time by a week easy compared to t-5 fluorescents and growing thicker stalks and more branches and leaves.

My best per light grow was 24 oz with 4 plants under a 600w Hortilux super hps.

1 315 got me 15 oz so I am thinking 2 might get me close to a half pound more with some practice.

I can tell you now 2 315s will most definitely beat a 600w hps. cmh watt for watt is a tad bit more efficient than hps. not just the benefit of better yields, but the fact it has such a complete spectrum. still geared towards heavy red with 3k spectrum. you get perfect green plants. the uv output helps keep the plants healthy as well. check out my current run.....

begged with 315w cmh 4200k bulb.

6 gorilla killa
1 pineapple crush
1 blue dream
1 skywalker og.

there isn't a single discolored leaf. and I even work full time where I only get about 2 hrs at night to work with them

 

[MichiganMedGrower]

I can tell you now 2 315s will most definitely beat a 600w hps. cmh watt for watt is a tad bit more efficient than hps. not just the benefit of better yields, but the fact it has such a complete spectrum. still geared towards heavy red with 3k spectrum. you get perfect green plants. the uv output helps keep the plants healthy as well. check out my current run.....

begged with 315w cmh 4200k bulb.

6 gorilla killa
1 pineapple crush
1 blue dream
1 skywalker og.

there isn't a single discolored leaf. and I even work full time where I only get about 2 hrs at night to work with them

Perfect so far!

 

[Kingrow1]

and we all know that Lumens actually have VERY LITTLE to do with the amount of light a plant absorbs lol. Lumens are referring the the amount of spectrum seen by the human eye....not that plant.....you want PAR rating comparisons lol

Ppfd and par are in no way the golden rule for light, the sooner growers get this the sooner we all get along.

Lumens are a better scale imo, say the word ppfd and you have 7 years of failed led claims to prove it.

Im guess what im saying is no one has figured out perfect spectrum for plants yet so ppfd is just your best guess and is even more inaccurate when comparing led to hps.

The lumen lives on

 

[Johnny Lawrence]

Ppfd and par are in no way the golden rule for light, the sooner growers get this the sooner we all get along.

Lumens are a better scale imo, say the word ppfd and you have 7 years of failed led claims to prove it.

Im guess what im saying is no one has figured out perfect spectrum for plants yet so ppfd is just your best guess and is even more inaccurate when comparing led to hps.

The lumen lives on

^ Troll

 

[Kingrow1]

^ Troll

I know some think this is trolling but its simply a current issue and i only use general so im going to pop up on such stuff.

Trolling dosent really happen much, wait till some one trolls your posts from years ago and brings up everything your saying different now or all your old fails and how lame you were when you hit this site claiming 30 years experience but couldnt hit a gpw... I can troll but most of us know it will just fuck the site up again