CHINABOY1021 experienced newbie May 2, 2003 415 0 0 Toronto ON Canada Visit site Jun 1, 2003 #1 how many years do ballasts last if light is used 12 hours a day.. i know this varies. but an estimate will do. will there be a lost of power output efficiency after a few years? thanks
how many years do ballasts last if light is used 12 hours a day.. i know this varies. but an estimate will do. will there be a lost of power output efficiency after a few years? thanks
