Submersible LED light

[Fenix]

Hi, i need a submersible LED light for my nano tank refugium.

I need something under 15 inches / 38 cm.

Can anyone recommend one or know some place in town that carry them?

Is a partular color of light better at growing cheatos than others?

Would something like this work?

http://www.ebay.com/itm/Aquarium-Fis...item2a27093ead

Thanks

[yellowworld]

Ive seen this one on the blogs, but i dont know where to get one, i think they are released so probably tunze

http://www.advancedaquarist.com/blog...able-led-light