Workhorse ballast for T5s?
 

Would I be able to use a Workhorse ballast for T5-HO lighting? My Coralife ballast bit the dust and I was thinking of changing this system to T5 instead of power compact.

Definitely. I've been using two Workhorse 8s for some time now. Salvaged them from a used fixture I aqcuired along with a 65 gal tank. In the original fixture each ballast was powering one VHO tube. Currently I have them wired to each power two 54 watt T5HO tubes. They're quite flexible as to size & number of T5 HOs you can wire up. Check the Fulham web site for additional info.