I saw this while browsing the internet today and thought it was kind of interesting, especially for those that are doing DIY LED setups or looking for ideas for nano tanks. Not sure how cost effective it is or how you'd modify it to incorporate it into your system but I'm sure you could figure it out. Probably want to disable the sound effects unless you wanted to play nature sounds or something. lol
http://www.philips.ca/c/light-therap...specifications