Compact flourescents

     > While on the subject of compact florescents, can someone out there 
     tell me
     > what wattage they are using? I have a 20 gallon tank that I would 
     like to
     > use them over. I assume that one can simply screw them into an 
     > aquarium hood, thereby getting two florescent bulbs instead of two
     > incandescents.
     I have a Philips 20 watt CF in a hanging pendant fixture over a 10 
     gal, and it works great.  It is amazingly bright.  These lights screw 
     into an incandescent fixture, but they have a pretty big 
     diameter--much larger than the "slim" aquarium bulbs, and I doubt they 
     would fit in an aquarium hood.