Robert,
I have an extra two ballast that power up to three ( ones a double and ones a single ) double bulbs, square pin configuration. They are powerfull and in mint working condition. I used to run 44" 20000 double bulb accents on each of them. I also have an reflector. Its a shame they all take up space in my fish closet now. Would be willing to let go cheap to clear the space. PM me if interested.