I have 1 of 2 tokays in a large 90 gallon old Oceanic Lizard Lounge. The tank is fully planted, gecko has lived in it since 2003. The tank is illuminated with 3 four-foot fluorescent fixtures. 1 fixture is the matching hood for tank and 2 are shop lights. There are a total of 5 bulbs on the tank, 2 T8 GE Daylight (6500K), an older T12 GE Daylight, a T12 GE plant and aquarium bulb, and a ReptiSun 10.0. I've not noticed any benefits of the uv for the gecko, but he does "bask" in the morning and again late afternoon. The only visual benefit I see is that my creeping fig, string of hearts, and fire flash plant (Chlorophytum sp.) are going nuts. I actually have the fire flash spreading in the tank.
Lights are on at 7:30am and off at 8. If I had a female for him I'd actually be cycling the tank, lowering temps and increasing my mistings. In years past that has triggered pre-breeding with eggs showing up around December. The gecko in this tank is actually the result of this cycling, dating back to March 1999.