Someone had a bad experience with the ZooMed light and two cockatiels.... the tiels eyes got "burnt" and they had to be medicated with eye-drops for two weeks... if I remember correctly
http://www.zoomed.com/Library//Produ...s/aviansun.pdf
NOTE ON LAMP BURN IN:
Compact fluorescent lamps have a "burn in" period when the light and UVB output is at its greatest. For your new AvianSun 5.0 Compact Fluorescent Lamp, this period lasts about two weeks when the lamp is used to provide a normal photoperiod or day/night cycle at 10 to 12 hours per day (150 hours of use). -----
----- WARNING: DO NOT place lamp closer to your bird than the recommended distances listed above as eye damage may occur.