Which coralife fixture did you get? I assume the 4x65watt one? In that case, a couple of workhorse ballast would work for you. I believe workhorse 7 can power up to 220w of PCs... so in your case, a couple of them would work alright. It won't look pretty, but it'd be a lot cheaper than a whole other coralife fixture.
Litemor (located on the west side of the city) carries them. I believe I bought my WH7 for around 50-60 bucks.
-Rich
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