Hi Matt, It is not that hard to replace the ballast in a fixture. AH Supply uses Fulham ballasts. I checked the Fulham <http://www.fulham.com/index.php> website and a 2X55 watt twin tube fixture requires a Fulham Workhorse 5 Ballast. I checked Reefgeek.com <http://www.reefgeek.com/lighting/Parts_&_Accessories/Ballasts/Fluorescent/W orkhorse_Long_5_by_Fulham> and found them for $26.95. Hope this helps! Roy _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member