workhorse ballasts and T5's

[Kronk]

I agree that its the starting of the workhorse that causes the drop in lifetime but as far as overdriving i think thats common for both. On a side note there was a really cool thread about overdriving NO lamps but i lost the link here is a spin off of it with a really cool experiment.

http://www.aquariumpros.ca/forums/showthread.php?t=186

Cheers,
Ken