Workhorse T5

[albert_dao]

Workhorse ballast are hard on the startup and will shorten the life of your bulbs rather significantly. They will not overdrive HO T5's.

The IceCap 440 and 660 will naturally overdrive your bulbs. There's no adjustments to be made to the ballast (actually, I have one right in front of me. But I'm using it as a paperweight for the time being since I don't have any of the other parts yet).

IceCap claims that overdriving will not shorten the life of your bulb as long as you're running them properly (read: keeping them as cool as possible). Everything I've read lends credence to this claim.