Hi, I am considering giving my birds an extra couple of hours of light a day (their coop is behind a fence and gets dark quicker) but I need to know if the wavelength/color/wattage of light matters. Can I use a florescent bulb? Is 14 watts ok? What about LEDs? Do people use a timer, and if so, do you start 'daylight' earlier, end it later, or both? I'd love to hear from others on this. Thanks!