LED Modification question

[Sleepiness]

I had made a bad purchase before I became somewhat educated in this hobby. The Beamswork green evo quad....sigh. Anyways I am planning a new tank set up and would really like to put this light to use again. I feel like this light has some potential but definitely needs to be modded. The tank I will be using is a 20g long. This light is very very bright and the biggest complaint I have heard about the light is "there is not enough blues". I am thinking about taking the DIY route and adding some serious blues to this fixture. I do not want to take the fixture apart, the idea I had was an aluminum bracket of some kind that will fit snugly on top of this fixture. Then then leds could be mounted to the bracket maybe even angled. I am just wondering if anyone has ever tried to pull this off. Maybe some other ideas would be nice as well. Here are some pics of what I am working with.



Only 11 of the 44 lights are blue. All are 3w leds. Suggestions for intense blue Leds would be appreciated as well.

 

[takaiguchi]

I have the 48" version and am using it on a 55. I like the light but would love more than just blue and white. I'd like to mod the actual light though. Paying close attention to this thread.

 

[pwreef]

Over a 20G tank you want like 8 white LEDs if they are truly ran at 3 watts. These are not. It's almost as much trouble and expense to build a whole new fixture as it is to add to this one. Bright to your eyes is not bright to corals. You have to measure PAR.

 

[oreo57]

OK ..here is some "outside the box" thinking
First the LED "cool white" spectrum.

The lenses could be removed and filtered then reattached.. or you could just filter it on the outside..
Proper selection of a filter will only remove "mostly useless" spectrum...

IF you just want more light, or a different wavelength.. that is a different story

as an example:
http://micro.magnet.fsu.edu/primer/photomicrography/bwfilterchart.html

This filter passes or transmits wavelengths whose diffuse density is less than 0.1, so the wavelength ranges transmitted by
the 34a filter are 410 to 470 nanometers (blue light) and 660 to 700 nanometers (red light).

Lighter areas are transmission bands.. a bit confusing..

 

[Sleepiness]

These LEDs are ran at 3w. And Oreo is that even English? thank you for the post. I found the same 3w LEDs used in this fixture on eBay. I plan on picking up a bunch of blues and a few uv to rework the fixture with. After taking the fixture apart I can tell the diode swap is going to be fairly simple. I will be sure to take a ton of pictures and post a diy when I am completed with this project.

 

[alado]

If you want to do it for real i eould say figure the inner workings of the light and find the forward voltage and the running current and search compatible lights. I imagine they are going to be the chinese ones from ebay buy who knows.