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Hpimichael02
02-28-2012, 01:27 AM
So guys I am working on my led light fixture, for a 10 gallon frag tank or of works out I will make another for my 55gallon.

So I used 20 3w led's-10 white 10 blue 90 degree lenses and 2 led drivers.
I'm using home depot aluminum c channel as a heat sink with a massive 5" fan.

The basic setup with just lenses:
http://i16.photobucket.com/albums/b1/hpimichael02/e71f0a44.jpg

The setup with blue led with lenses
http://i16.photobucket.com/albums/b1/hpimichael02/7e4e96a2.jpg

And all 20 LEDs setup
http://i16.photobucket.com/albums/b1/hpimichael02/f81f6bdd.jpg

These LEDs are not the best of the market but comming along nice. Wednesday or thrusday I'll be making the fixture- stay tuned

openbook
02-28-2012, 04:40 AM
That looks like it's going to be a seriously massive fixture over a 10gallon tank. What's the lumen output going to be? Looks like it will be extremely bright in your frag tank.

Cliff
02-28-2012, 06:42 AM
If those do turn out to be too bright, could you use some type of dimer switch ?

Hpimichael02
02-28-2012, 12:52 PM
yea they are gonna be bright the fixture is going to be 9"X13" so the size of a glass baking dish. the lumen output is going to be high and a dimmer switch may be the mix of things. for the cost its cheap and if it works great then im gonna make one for my 55 Gallon tank.

im just not sure what to make the case out of, thing gauge steel or aluminum(i cant TIG weld) or wood...im going either steel or wood.

openbook
02-28-2012, 10:21 PM
I would build a wood frame and leave it open on top for heat exchange. Maybe hang it from the ceiling with one of those adjustable gro light setups, whatever they're called.

dbosman
02-28-2012, 10:58 PM
Just a comment. I would have put the LED emitters inside the channel.

For a 10g frag tank, I'll be interested to know if the optics prove useful.

Hpimichael02
02-29-2012, 01:35 AM
As for placing the led in the channel I didn't because I didn't want the led surrounded by heat, also yea for the optics they may be useless how ever we will figure it out, but I want a high output frag area lolp

ILuvMyGoldBarb
03-06-2012, 11:05 PM
Just a comment. I would have put the LED emitters inside the channel.

Not really a good idea. The aluminum U-channel acts like a heatsink. The high intensity LEDs run somewhat hot and need to have the heat drawn away via a heatsink and a fan isn't a bad idea either. Putting the diodes in the channel will likely decrease the life of the diode.

Hpimichael02
03-08-2012, 01:40 PM
The project complete only 10 of the led have optics it's a little much for a 10G frag tank, but more light is faster growth or recovery time ;)

The tank is dirty how ever it's the color of a cloudless sky:
http://i16.photobucket.com/albums/b1/hpimichael02/c293d7fd.jpg
It's also much brighter than expected 20 3w LEDs lol, the temp on the u channel dont exceed 88f with out a fan,

Hpimichael02
03-08-2012, 02:55 PM
Some build pics:
http://i16.photobucket.com/albums/b1/hpimichael02/8ff8f3da.jpg
The box
http://i16.photobucket.com/albums/b1/hpimichael02/664f32b0.jpg
10 LEDs on
http://i16.photobucket.com/albums/b1/hpimichael02/e86878c7.jpg
The blinds open in the window and the light drowned it out

http://i16.photobucket.com/albums/b1/hpimichael02/becfb0ea.jpg

openbook
03-09-2012, 03:09 AM
Nice work!