I'm talking burnt black tubes, light no work. >>Does anyone else experience quick life on the GE Sunshine T12? (Chroma >50) > >All fluorescent tubes should be changed every 6 mos. I havn't found >C50's to be of a shorter lifespan than any other. You can talk to >GE to get exact luminous flux decay curves. Call the "GE answer >line" by getting their number from 800 555 1212. >