Clamplights on my 125 NPT
http://dataguru.org/misc/aquarium/
My 125 is a joy and really low maintenence. I pull plants once a month, top it off when it needs it, rinse the foam filters when they get stopped up and feed the fish. that's about it as far as regular maintenence.
Most of my NPTs sit by south windows and get 1-2 wpg 6500K light that's on from 9am till midnight. Tho some only get light from the window and do fine.
I don't have a couch, and have 13 tanks, so I don't want to hear about not having the "room" in an entire house for a larger tank. LOL