The ballast was dead, it was a 2-bulb unit, tried just replacing the bulbs and it didn't work.
I ripped a Workhorse 5 out of another fixture I had laying around and used it for a replacement ballast, it works fine.
I need to get a spare ballast anyway to have on hand and the 9325K bulbs for my plant tank.
By they way if anyone is doing this in the future apparently the Workhorse 5's will run 2 x 55 Watt straight pin pc bulbs but for the square pin variety you need a Workhorse 7, don't ask me why.
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