DIY HO LED system possible?

ive thought about the same thing numerous times, and i REALLY dont think this sort of technology is ready to be put into the aquarium setting just yet. LEDS are constantly being upgraded and are gradually decreasing in price.

personally, id wait.

For just general tank lighting (no corals or plants) I'd recommend http://theledlight.com which sells normal LED light bulbs.

As what legendaryfrog suggest it is possible but not this time. It is really cool though if you really think about it. Maybe it will release next year or next month maybe. But the time being you should check out http://www.niceledlights.com/

LED lighting is here, now. DIY is less expensive than off the shelf, but totally worth it for handy folks.
Forget about resisters though. Those are for low wattage low current toys.
Where LEDs currently really shine, is fish tanks. Three 3 watt emitters, at the right height, will light a 10g tank really nicely.
A couple of 15 watt pendant LED 'bulbs' will light up a cichlid tank but you need to have them high enough that you need to add a band of metal around them to make it easier to see into the tank from a chair. The same concept as a metal halide, at a lot less expense and electricity. Planted tanks are a different matter.

On the lower end a dozen cheap 3 watt emitters with single driver will light up a planted tank or a small saltwater tank. Multiple strings of lights on high end drivers will grow coral quite well. Unfortunately a dozen 3 watt emitters use more energy than a single 28 watt T5HO lamp which with a good reflector, will do as good job or better lighting the tank.

Moving up, the efficiency keeps going up. You can light a 48" planted tank with a dozen of the newest high output emitters using optics to narrow the beam, running on a constant current driver pulling a couple of Amps.

If you want to play around, ordering online from Chinese companies is the way to go.
http://www.satistronics.com/3w-high-power-led-pure-white-110130lm_p1317.html $1.99 each in lots of 5
http://www.satistronics.com/3w-high-power-led-warm-white-80100lm_p1319.html $1.99 each in lots of 5

This driver will run 9 - 12 3 watt LED emitters at 670 mA $13.44 It's nearly a perfect starter unit for the emitters above.
http://www.dealextreme.com/p/waterp...stant-current-source-led-driver-85-265v-42906

For higher output DIY systems, start and probably end here.
http://www.ledgroupbuy.com/

Well if want to find quality LED lights you can always go to http://www.niceledlights.com/

Might there be a way to block responses to multi year old threads?