led lighting

pooner · 11-12-2006, 12:08 PM

has anybody researched led lights ihave seen the 2 watt 6200k lights and was wondering if it could be used for corals

jonathan · 11-12-2006, 02:06 PM

LED Array for a Pico - Nano-Reef.com Forums

Mantis Reef - Nano-Reef.com Forums

PFO Solaris LED: Premium Aquatics

just to give you an idea of DIY and manufactured systems. i hope that helps.

jonathan

pooner · 11-12-2006, 07:52 PM

thanks that definitly helps. gives me several starting points at least

BlackWhiteYellow · 11-12-2006, 08:54 PM

I've been really interested in leds for quite some tme, i found 500 blue leds for $20 at ledshoppe.com, I've built a 171led array from these and for the price you pay, there is plenty of light, they also have uv ones but i'm not sure about putting in uv at 380nm - 400nm. if anyone knows this spectrum is harmfull then please tell.

All that aside, i've gone through the nano-reef thread. and no-one has bothered to mention that you can use a standard rectifier diode to drop the voltage in 0.7v intervals, the comomn ones are rated at one amp, so you don't need many of them in parralel to handle a large load. also the voltage drop is independant of current, so if you add more leds you still get the same voltage drop.

I'll be ordering 500 blue, 500 green, 500 red to start playing with and testing out, let us know how your set up goes and what led's your interested in getting.

pooner · 11-13-2006, 04:08 AM

i belive you can use the uv led lights just use fewer. it would be easyer if we had something to measure the led wave lengths

Tangster · 11-13-2006, 06:59 AM

The light that visible to the human eye is from 380-780nm. Below 380nm is Ultraviolet and above 780nm is Infra Red. PAR is considered to be 400-700nm. UV-A is 320-400nm, UV-B is 280-320nm and UV-C is 200-280nm. You will see a small amount of UV-B between 310-320nm and a considerable amount of UV-A from 320-400nm

geekdafied · 11-13-2006, 03:07 PM

400-420nm is actinic, 420nm being true actinic

BlackWhiteYellow · 11-16-2006, 02:11 AM

This is something i have been chasing up for quite some time now, today i recieved an e-mail from the sales dep at yesled.com.

Quote:

Let's take a look at below pricing : (F.O.B. Hong Kong )

For 50,000 Pieces of 420nm LED would Cost Only @USD$0.166/pc
For 100,000 Pieces of 420nm LED would Cost Only @USD$0.140/pc
For 500,000 Pieces of 420nm LED would Cost Only @USD$0.118/pc

For 1,000 Pieces of 12v 420nm Spot Light would Cost Only @USD$5.00/pc
For 10,000 Pieces of 12v 420nm Spot Light would Cost Only @USD$3.40/pc
For 50,000 Pieces of 12v 420nm Spot Light would Cost Only @USD$2.90/pc

Please confirm and do not hesitate to let us know if you have any questions or enquiry.

Thanks again and we're ready to serve you.

Best Regards

Rambo (Export Sales)
YesLED.com ( Hong Kong )
24 Hours Direct Line: (852)97544779

More LED Products & Auto Parts : Welcome to YesLED.com

unfortunately he missunderstood that when i was asking for a quote on 50pk
100pk of these.

http://psycotech.com/420nm.pdf

to say the least this is the cheapest 420nm I've come accross in all my time searching, If anyone wants to put some money togeter to get these then let me know.

I'll be asking them for a sample to test, if any one knows a person with access to a spectrometer in that range, i will try to get the sample to them.
I'l also ask led museum if they would like to have a look at it for me.

Ph4Y5e · 11-22-2006, 10:24 PM

Ive seen LED strips pre made wired and everything in hong kong... any colour u want... you can also custom make them to any size or colour....and yes ...its dirt cheap...lol..

Im thinkin bout usign LEDS for night lighting...

anybody done that before?

LOL RAMBO... well thats still not the weirdest english name ive encountered in these parts...