Blue tinted bulbs require higher wattage to offset the severe loss of light through the tint. Power consumption and filament life are inversely proportional. The additional heat produced by the hotter bulb shortens the life of the socket and sometimes the fixture itself.
http://www.danielsternlighting.com/t...blue/blue.html
http://www.danielsternlighting.com/t...uperwhite.html
http://www.danielsternlighting.com/t...s/Hid/HID.html

 

Thank you for the link .That explains alot. bulb.

 

Thanks you for the link to phillip's.I'll stick to those type's for now