wut u think about this light bulb

[Rp Marine]

http://207.201.194.230/images/Mini-50-50.gif
Mini Compact Fluorescent Lamps The Mini Compact Fluorescent Lamps are designed to be used where space is limited and powerful lighting is desired. Fits into standard, medium-base lamps sockets • 50/50™ is perfect for fresh and saltwater aquariums(50% 10,000K Daylight and 50% Actinic 03 blue) • Self-ballasted • Low operating temperature • 6,000 hour life. 20watt bulb for a 5 gal nano tank with only 1 clown fish

[traveller7]

http://207.201.194.230/images/Mini-50-50.gif
Mini Compact Fluorescent Lamps The Mini Compact Fluorescent Lamps are designed to be used where space is limited and powerful lighting is desired. Fits into standard, medium-base lamps sockets • 50/50™ is perfect for fresh and saltwater aquariums(50% 10,000K Daylight and 50% Actinic 03 blue) • Self-ballasted • Low operating temperature • 6,000 hour life. 20watt bulb for a 5 gal nano tank with only 1 clown fish

You'll need to DIY a reflector and it will not likely be efficient, but it does not sound like you need more then a night light for your application.