found a place to get cheap led's

Just need to know which to buy? Since I have no clue about LEDs and stuff I dunno what the correct color would be. They do not mention the color on the growLED sites.

Yeah what are gonna be the most effective for both veg and flower and i dont mean just blue and red

well, plants mainly use the blue and red spec of light since those are absorb by the 3 types of chlorophyll.
my best guess, check a light spec chart for cannabis, better there is on around here

Yeah, i know about blue (6400K) and red (2700) but i dont know bout the LED's.

Wot is a SMD LED, or a through hole LED

does it really matter what you choose as long as they are either blue or green or is there a marked difference btwn diff blue colours?????


ALSO: has any1 got any hardcore results proving that LED's actually work

Jimbo, LEDs can be extremely efficient and great.

http://www.marijuanapassion.com/forum/attachment.php?attachmentid=23489&d=1177089232
http://www.marijuanapassion.com/forum/attachment.php?attachmentid=23490&d=1177089232

That same plant almost done flowering, mind you this is a 16oz plastic party cup he is growing in.

http://www.marijuanapassion.com/forum/attachment.php?attachmentid=27011&d=1181324256
http://www.marijuanapassion.com/forum/attachment.php?attachmentid=27013&d=1181324256


I will definately be buying a shit load of them when I know which colors to buy, I will create a 3ft x 3ft x 5ft grow cab with every wall, even the floor covered in LED diodes. I bet the results will be way better then a HID at that point.

well that isn't to impressive if you ask me dude, you could have got the same results on a SOG plant grown with CFLs. LEDs are fancy, but those LED bundle bulbs you use i have seen in electronic shops for 80-90 bucks and the clerc told me that this would be equal the in output to only a weeny 25W incandescence bulb.

but what did you pay for those 4 and what did hey state to send out in lumen per watt?

green_nobody said:

well that isn't to impressive if you ask me dude, you could have got the same results on a SOG plant grown with CFLs. LEDs are fancy, but those LED bundle bulbs you use i have seen in electronic shops for 80-90 bucks and the clerc told me that this would be equal the in output to only a weeny 25W incandescence bulb.

but what did you pay for those 4 and what did hey state to send out in lumen per watt?

Click to expand...

Sorry, they're not mine. And that's not my grow.

That is AlienBait's plant, this is the thread.
16 oz. plastic cup grows - Growing Marijuana Forum

I am not an Expert on this but my research found:

470nm is good for the blue LEDs Veg

630 to 645nm is for the Red Flower

I have heard the ratio to blue to red is 5 to 2 veg and 1 to 6 flower

if you buy the LEDs to wire check out this site on how to hook them up
LED Circuitry tutorial: how to hook up LEDs.

I have bought LEDs on Ebay and they cost $15 with shipping from china for 400 LEDs.

I want to see the grow box, I have started one and everytime I go back to it I don't have time to finish it. I have veg a plant 12" tall using nothing but 36 ultra bright blue LEDs (I found out it was a girl and decided to HPS it)

Looks confusing to hook up LEDs, I am rethinking this whole LED thing.

FYI - The wavelengths you want for growing are...

Aprox. 450 Veg...
Aprox. 650 Flower...

SMD (Surface Mount Device) is not easy and you are better off with through hole soldering...

Another DIY guide to LED Grow lights...
LED Grow Light DIY

This is probly the best bet for a beginner...
14 Watt Grow Light Kit - HomeGrownLights.com

You can also give them another $20 and they will build and test it for you so its $65 for a built 14W led lamp/array great for side lighting IMHO...

Thats the extent of my LED research... Good luck...

+rep moon47 - thanks for the info and links.