how efficient are led's at growing ?

[Abiqua]

NO way!

Drivers are about 30$ each and diodes are about 34$ each and i belive i can do with 8-10 so this is MAX around 640$!!!!
I found stuff on net but i dont know what model to order(spectrum) prices are same for differnt spectrum so i know aprox final prize and is not more than 700$ with taxses and postage!
Where did u find 1K$??? U know what u talking about?

Use octopart to search for things.......


Most recommend 400w's of quality Led to replace 600w maybe even a tad less. I would say 6-8 cobs, being driven at 1.4amps @37 volts.
Parts:
Meanwell LPC 60-1400 [$19]
Cree CXA 3070 bin AB, Z4, Z3 [3000k]
-AB's are the highest bin so far [+$40]
-Z4 was the best [$38]
-Z2 is just a step down from the Z4 [same price, maybe cheaper if you look around] [Still over 40% efficient]

For every 2 COBs, you will need 12 inches [30cm] of 5.88 in [14.7cm] wide heatsink and cool it with one 120mm DC Fan.

Or you can use the Arctic Alpine Plus II CPU coolers $10 [one for each cob]

Thermal adhesive
Kapton tape [optional]
solder
etc etc



Here is just about every CXA thread I can find, Supra the guru being the 1st link.....

http://rollitup.org/t/diy-led-cree-cxa3070.789575/
http://rollitup.org/t/thinking-of-a-new-light.822679/
http://rollitup.org/t/another-cree-cxa3070-diy-thread.824364/
http://rollitup.org/t/diy-led-grow.738671/
http://rollitup.org/t/diy-leds-how-to-power-them.801554/
http://rollitup.org/t/cxa3070s-350ma-orientation.834063/
http://rollitup.org/t/apache-at600-led-vs-1000w-hps-blue-dream-grow.813412/page-60
http://rollitup.org/t/my-if-i-can-do-it-cree-grow-light-most-can-do-it-with-a-lot-of-help.826776/
http://rollitup.org/t/cree-cxa-3000k-80cri-spectrum-analysis.832666/
http://rollitup.org/t/home-brewed-cree-cxa3050.823300/

 

[Greensea]

WoW!
Thnx for infos!!!
U save me so much time Love ya!!!

 

[Abiqua]

FYI

Supra recommends 25w's for every 25x25cm

...and if you want penetration, LEDIL makes reflectors for
steeper beam angles.

Happy Reading

 

[PetFlora]

Captainmorgan did a great thread/grow using only Cree household bulbs. I have used them as well
Great for a small grow, but to costly to expand

BML SPYDR 600 $999

Starting to jar now

will be posting weights in my thread

 

[furious248]

thanks for all the help guys, i was chatting to hogbudd for some time and he taught me a few things about how his t5's work with a open grow room. thanks for all the help but fir the mo i think im just going to get a shed load of t5's and blind myself with the next grow. thanks again and happy growing

 

[rob333]

NO way!

Drivers are about 30$ each and diodes are about 34$ each and i belive i can do with 8-10 so this is MAX around 640$!!!!
I found stuff on net but i dont know what model to order(spectrum) prices are same for differnt spectrum so i know aprox final prize and is not more than 700$ with taxses and postage!
Where did u find 1K$??? U know what u talking about?

P.S. i have a virgin rack mount pannel with 4x super fans... i dont need to buy any extras just a aluminum heat sink but i can pull it from my old PCs or buy it in different sizes...they are rly cheep

yeah but why would u do that ???

 

[rob333]

640 bucks u could set up a pretty mean grow tent not 1 light lol

 

[Abiqua]

640 bucks u could set up a pretty mean grow tent not 1 light lol

Now you are just trolling

 

[rob333]

Now you are just trolling

just dont like silly people aint trolling lol

 

[Abiqua]

just dont like silly people aint trolling lol

Well dude, you just sound burnt is all, I mean you bought the cheapest led that is out there and now you are complaining. Tell me how that makes sense?
Buy some proven shit next time.

 

[rob333]

Well dude, you just sound burnt is all, I mean you bought the cheapest led that is out there and now you are complaining. Tell me how that makes sense?
Buy some proven shit next time.

mate i work at a hydro shop been worken at one for the last 15 years and yes the mars hydro one was a bag of shit and the 5 others that we have tested ranging from $120 leds up to $3000 leds and i tell u right now they are a bag of shit and a wast of money give em another 5 6 years yes maybe but for price yeah u would have to be just stupid to buy lights at that price if they were 60-70 bucks i would say go for it u could buy 3-4 even 6 to make up the lumens but besides from that yeah there shit i have plasma lights testing now performed wikked in veg little sad in flower so yeah i no my shit man when it comes to lights

 

[rob333]

Well dude, you just sound burnt is all, I mean you bought the cheapest led that is out there and now you are complaining. Tell me how that makes sense?
Buy some proven shit next time.

i think ur still stuck in the led fad that died about 3 years ago here lol people woke up and went back to hps as a hps bulbs last 2 3 years as ur little led diodes only last 2-3 months

 

[Abiqua]

Lumens are not a good characteristic of measuring light, but you would know, because "you know your shit".

This isn't about you, its about the fact that you sound way under educated about light in general.

HPS is fine, a known quantity. But you back up your assertions with no fact. This is why newbie's struggle. Just at least be truthful.

Fucks sake. Its almost comical how far off base you are.

If people were really smart, like you, they would get the sulfur plasma train in gear.

 

[Abiqua]

By the way there are plenty of LED's that surpass the lumens of an HPS, dude wrote it out up above.

Name one HPS that puts out 140+ lumens/watt?

 

[rob333]

By the way there are plenty of LED's that surpass the lumens of an HPS, dude wrote it out up above.

Name one HPS that puts out 140+ lumens/watt?

View attachment 3195016

lolol and here comes the numbers to try and prove leds are better

 

[rob333]

mate i aint going down this road i have seen the results and they are shit shit shit all i gota say about the leds contact me in the next 5 years and then we will have a talk about ur leds then cya

 

[Abiqua]

lolol and here comes the numbers to try and prove leds are better

Thanks for proving me right, kiddo!

 

[Abiqua]

mate i aint going down this road i have seen the results and they are shit shit shit all i gota say about the leds contact me in the next 5 years and then we will have a talk about ur leds then cya

Your a fuktard, there is a whole section proving that unicorns are real.

 

[rob333]

By the way there are plenty of LED's that surpass the lumens of an HPS, dude wrote it out up above.

Name one HPS that puts out 140+ lumens/watt?

View attachment 3195016

be honest man u can have all the wattage and lumen output on paper as much as u want until u have done a few led grows ull see ur papper numbers will go straight out the window just like these people that do tickets for work and have no fucken idea what they are doing then u have people that have worked the job with no tickets that do 10x better job that u and me im the guy that has done it ur the guy that thinks numbers on paper matter somthing lol

 

[rob333]

Thanks for proving me right, kiddo!

how did i prove u right by me being right ??