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OfflineRider420
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Registered: 06/21/17
Posts: 397
Last seen: 2 months, 5 days
Re: HID vs. LED. [Re: Rider420]
    #836972 - 04/07/19 12:10 PM (3 months, 10 days ago)

https://www.penglight.com/lm80-lm79-l70-and-tm21-what-are-the-differences-for-lighting/

Quote:

What is L70?
“My LED’s will last for 50,000 hours.” “My LED’s will last for 100,000 hours.” We have all heard these claims. The truth is that an LED being an electronic device with no moving parts could theoretically last forever.

Three things can kill a LED. Heat, dirty power and moisture will all have detrimental eff ects on LED life. In reality, even if LED’s could last forever, their lumen output will diminish over time to a point where they would no longer function as a useful lighting source. We call this “lumen maintenance.” The industry has determined that the LED ceases to be a useful light source when lumen output reduces to 70% of its initial lumens. This is called L70.

L70 is a lifetime measurement criteria developed by IESNA (Illuminating Engineering Society of North America) to evaluate the useful lifetime of an LED luminaire in terms of the expected number of operating hours until the light output has diminished to 70% of initial levels. or when the lumen output is 70% of its initial output.

As LEDs do not fail and “burn out” like other light sources; instead, they gradually decrease over time until they are no longer producing useful light. It is generally established that the human eye is only sensitive to lumen depreciation of 30% or more. Therefore, L70 lifetime is defined by Illuminating Engineering Society Standard LM-80-08, entitled “IES Approved Method for Measuring Lumen Maintenance of LED Light Sources.

L70 lifetime is dependent upon many variables, such as the operating temperature, drive current, and the technology and materials used to construct the products.






https://retrofitcompanies.com/myths-about-led-lighting-and-led-light-bulbs/

Quote:

MYTH 3: I’VE HEARD THEY LAST FOREVER
Another common talking point with LEDs is that they last forever. This is technically not the case. Unless an actual component in the LED fails, they will provide light “forever.” While LEDs do not burn out like fluorescent lamps and other bulbs they will however degrade and dim over time. The diode itself will begin to emit less and less light as the years pass. Still, LED lamps can last over 25,000 hours. This is over 20 times longer than an incandescent bulb and 5 times longer than most Compact Fluorescent Lamps (CFL).

Protect your LED Investment. Tips for maximum life:

Do Not Overheat The diodes and components of an LED bulb are very hot. As you have probably noticed, LED bulbs are covered with heat sinks to displace this heat. Never put LEDs in fully enclosed fixtures or warmer areas. Overheating is the most common reason for LED failure and the most preventable.
Use LED compatible dimmers Not all dimmers are universal. Avoid headaches and early failures by using the correct dimmers. Ask your supplier which dimmers work with your LED product.
Choose the Proper Application LEDs are so customizable that there are specialty bulbs and fixtures for almost every application. Know if your LED bulb will perform in your current climate, environment, or space beforehand.
In Summary: While LED technology has an amazing long life, it does need to be mindfully employed to give you the benefits it offers. Be sure to use the correct lighting product for your application, whether it be an elevator, bathroom, parking lot or factory, the best solution is the one designed to do the job.




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Offlinecsledger
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Registered: 03/31/19
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Re: HID vs. LED. [Re: Rider420]
    #836978 - 04/07/19 10:20 PM (3 months, 9 days ago)

Hey thats high quality shit right there straight from china.


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OfflineIcetech
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Registered: 12/17/18
Posts: 40
Loc: Detroit
Last seen: 2 months, 10 days
Re: HID vs. LED. [Re: csledger]
    #836980 - 04/08/19 08:32 AM (3 months, 9 days ago)

One thing i don't see mentioned is that LED technology has been advancing at a pretty good rate and the new LED's are pretty amazing...

The videos ham posted are 4 and 5 years old and the technology has come a long way even in that short time.

Personally i use a quantum board from kingbright, which is exactly the same as HLG's cept it was over 100 less shipped. Has worked amazingly well for me so far, i'm going into flowering this week sometime..

P.S. check out grow pot cheaply on youtube.. the guy uses perfect sun led's and has pulled 3 pounds dry out of a single auto using LED..

P.P.S. having less heat and also using a lot less electricity are big selling points to me also..


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Offlinehamloaf
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Registered: 10/21/13
Posts: 179
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Last seen: 7 days, 10 hours
Re: HID vs. LED. [Re: Icetech]
    #836982 - 04/08/19 09:34 AM (3 months, 9 days ago)

Hello, Icetech.  Hope you are well!!  Those are good points about the advancement of LED technology over the few years in between now and when the videos I posted were made. 

I am looking for the big daddys like posted in the videos above that will cover at least a 4x4 foot area.  From what I understand that you're saying; there are better lights available on the market today?  Is "Kingbright" a name you would trust?  Thank you so much for your time.


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OfflineIcetech
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Registered: 12/17/18
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Re: HID vs. LED. [Re: hamloaf]
    #836983 - 04/08/19 10:21 AM (3 months, 9 days ago)

No need to thank me, you have helped me sooo much on the other forum :smile:

The only thing i can say about kingbrite is that for me.. they work great.. I just ordered a second 250w (i got 250 cause A: under $200 shipped from alibaba which is 100+ less than the guy in ohio sells the SAME EXACT product for)
B: i'm not looking for massive grows.. i am doing 2 plants in flower, 2 in veg at a time.. If they are helathy and make enough bud for me.. then good..

250w isn't much in electrical costs and all of that adds up :smile:

As far as growing.. i am on my first grow, one plant is just amazing the other is decent, that came down to me learning nutrients though, not the light..

My 250w is 2 panels wide, i use a 4x2 tent (4 wide obvously) the 250 is maybe a little narrow but hasn't been an issue. For a 4x4 i would get a 500w which is 4 panels and plenty of light (to me)

For a 4x4 i would get this..
Kingbrite 480w
The main thing with quantum boards is the LM301B LED's which are pretty much samsungs newest and most efficient LED's and the V2 which is the newer version of them.. which i can't recall and am lazy to look up what it means:) I bought mine in the 3500k light spectrum..

That 480w is not cheap.. but.. nothing good is.. The 250w i use was like 190 shipped.. took 4 days to show up.

And kingbrite is a trusted name.. the thing i learned about alibaba is that those companies live on their reputation and seem to not want anything hurting them.. so companies that have been around awhile are there for a reason.

P.S. i see guys higher up complaining bout "chinese crap" well.. better get used to it.. we don't build anything better or for better prices.. our crap or their crap. it's all crap :smile:

Also.. this guy makes lights, but they are crazy expensive to me.. but that yeild... his channel is a decent one to follow, he posts like every other day..
3lb autoflower..

One last thing about why i like LED.. way less heat than normal lights.. With my exhaust fan off on my tent my temps hit 81-82.. with the fan on they drop to 72-74.. perfect. I have a buddy that uses 1000w old style light and his heat is just insane..


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Offlineyoosername
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Registered: 06/09/17
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Re: HID vs. LED. [Re: Icetech]
    #836993 - 04/08/19 05:41 PM (3 months, 9 days ago)

The v1 quantum boards use LM561C diodes.  It's cheaper than the 301B and still a pretty good diode.

Meijiu is another Shenzhen supplier.  Their fotop 800 diode boards are well suited for a 4x4.  You can buy a kit or just the boards and build your own fixture.  FOTOPS V2-600H-2

I was originally planning on building a light with four 800 boards without heatsinks.  Each one could be run at 200w for a total of 800w, which is ideal for a 4x4.

More recently however I've been leaning towards four QB 96 Elite V2's.  I would start with one hlg-480h-54a per fixture and upgrade to two down the road, after I add either 2 more 96 v2's or active cooling.


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OfflineIcetech
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Registered: 12/17/18
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Re: HID vs. LED. [Re: yoosername]
    #837003 - 04/09/19 08:06 AM (3 months, 8 days ago)

Ah thanks, i couldn't remember what V2 was for :smile: That single 96 doesn't seem like much of a bargin when you can get well over double the power with driver for less than half the price just buying a complete QB 250w?


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Offlineyoosername
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Re: HID vs. LED. [Re: Icetech]
    #837025 - 04/09/19 07:03 PM (3 months, 7 days ago)

A kingbrite QB 250w is ~$190.

One QB 96 ($100) plus one hlg-240-54a ($62) is $162, excluding shipping, wires, etc.

It comes out pretty close in the end, but the 96's can handle over 300 watts each with active cooling.


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Offlinehamloaf
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Registered: 10/21/13
Posts: 179
Loc: Back in the USSR. Flag
Last seen: 7 days, 10 hours
Re: HID vs. LED. [Re: yoosername]
    #837026 - 04/09/19 07:38 PM (3 months, 7 days ago)

Hello, eveyone!  Hope your days are going well.

Cost isn't too much of an issue, so after carefully reading through the posts here, and around the Internet, along with much consideration; the decision has been made to go with the BLM Spyder 1200's, or Spydrx 660w

https://heavygardens.com/spydrx-plus-685w-led-grow-light.html?fee=15&fep=17216&utm_source=google-feed&utm_medium=shopping%20feed&utm_campaign=SCFeed&utm_source=google&utm_medium=cpc&adpos=1o1&scid=scplpSR-P-I&sc_intid=SR-P-I&gclid=CjwKCAjwhbHlBRAMEiwAoDA341NiB9D8zp-BeFNQKWy6OdUaVPhmMzNnak4FwzpWBD8iF8E0ygcc5hoCrI4QAvD_BwE

  Thank you all so much for your responses.  Am about a month or so out before being able to pick one or two of these BLM Spyder 1200's up.  I will post updates and let you guys know when the light(s) arrive. 

:growingweed:


Edited by hamloaf (04/09/19 08:35 PM)


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OfflineIcetech
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Registered: 12/17/18
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Re: HID vs. LED. [Re: hamloaf]
    #837031 - 04/10/19 07:55 AM (3 months, 7 days ago)

Quote:

hamloaf said:
Hello, eveyone!  Hope your days are going well.

Cost isn't too much of an issue, so after carefully reading through the posts here, and around the Internet, along with much consideration; the decision has been made to go with the BLM Spyder 1200's, or Spydrx 660w

https://heavygardens.com/spydrx-plus-685w-led-grow-light.html?fee=15&fep=17216&utm_source=google-feed&utm_medium=shopping%20feed&utm_campaign=SCFeed&utm_source=google&utm_medium=cpc&adpos=1o1&scid=scplpSR-P-I&sc_intid=SR-P-I&gclid=CjwKCAjwhbHlBRAMEiwAoDA341NiB9D8zp-BeFNQKWy6OdUaVPhmMzNnak4FwzpWBD8iF8E0ygcc5hoCrI4QAvD_BwE

  Thank you all so much for your responses.  Am about a month or so out before being able to pick one or two of these BLM Spyder 1200's up.  I will post updates and let you guys know when the light(s) arrive. 

:growingweed:




If you are going to spend that much i would consider this.. he has proven results and posts vids of his grows using that light almost daily...

PSLED


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OfflineIcetech
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Registered: 12/17/18
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Re: HID vs. LED. [Re: yoosername]
    #837032 - 04/10/19 07:56 AM (3 months, 7 days ago)

Quote:

yoosername said:
A kingbrite QB 250w is ~$190.

One QB 96 ($100) plus one hlg-240-54a ($62) is $162, excluding shipping, wires, etc.

It comes out pretty close in the end, but the 96's can handle over 300 watts each with active cooling.




Ahh thanks, i didn't see their power handling.. the issue i would have with that is what is it's footprint? like when plants are getting tall how much is one of those going to be able to cover? Have never used or seen that light before.. so i am curious..


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InvisiblephychotronM
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Registered: 02/17/11
Posts: 1,969
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Trusted Cultivator
Re: HID vs. LED. [Re: hamloaf]
    #837039 - 04/10/19 12:51 PM (3 months, 7 days ago)

Quote:

hamloaf said:
Hello, eveyone!  Hope your days are going well.

Cost isn't too much of an issue, so after carefully reading through the posts here, and around the Internet, along with much consideration; the decision has been made to go with the BLM Spyder 1200's, or Spydrx 660w

:growingweed:




that's the one I would get. Specifically because its one of the only fixtures that spreads the light out properly. Everything else concentrates the diodes... This is the manufacturer making it easier on themselves while giving you a less ideal product.


--------------------
Any help given is for educational purposes only. Its your responsibility not to break any applicable laws
Bamboo Bongs I make | Perfect Dry and Cure | Grapegod under LED
“Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune intoned in the distance by an invisible player.” ~ Albert Einstein


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OfflineIcetech
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Re: HID vs. LED. [Re: phychotron]
    #837041 - 04/10/19 12:54 PM (3 months, 7 days ago)

If i had the spare cash i would go with this type of setup.. his panels have a super high density and you can build the frame however you want, the only thing i don't like bout my quantum board is that it's not spread out more :frown:

PLC


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Offlineyoosername
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Re: HID vs. LED. [Re: Icetech]
    #837043 - 04/10/19 03:56 PM (3 months, 7 days ago)

The spydrx 660w is a great light, I have no doubt you'll be satisfied with it.  However, you could DIY a comparable strip light with LM301B's for less than $800.  I plan to DIY because I have a limited budget, and I want the option to upgrade my fixtures with UVB and far red, but a pre-assembled fixture would certainly be more convenient.

Quote:

Icetech said:
Ahh thanks, i didn't see their power handling.. the issue i would have with that is what is it's footprint? like when plants are getting tall how much is one of those going to be able to cover? Have never used or seen that light before.. so i am curious..




Each 96 will cover a 2x2 nicely, like 800-1100 ppfd at 200 watts and 18".


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