I am getting a new pacman frog Saturday and I wanted to know what should lights should I get. I heard they do not need lights, but people still say they need a light so I am really confused. I know they say they need a light to tell day and night cycles but for that, can't I just keep my window opened. Or do they really need the light to tell the cycles of day and night? Also if I get a UTH (under tank heater), will that be okay for day and night? If not what exact light would you recommend and the wattage as well?