Troy, I ran mine on a regular type ballast. Dont know the specific model, just an ordinary ballast.
I then purchased a pair of Icecaps tp drive them. They were brighter, but not a large difference. However the ballasts are very nice and are suppose to give the bulbs some longevity, which the 175w German 10K, already has a reputation for.
After I sold my electronic ballasts, I purchased another duel, regular type. This was to run a pair beside my 400 12K. That set-up worked fine. I sold them to a friend, who ran them on his 120g. WE though it would be fine over the tank, but as time went on, it became our opinion that there was not enough light for the corals, with that particular set-up.
Definately more light from 4 vho bulbs over the same system. Soooo, if I was to use them alone, as a lighting source again, I would,
- run them on electronic ballasts
-not try to cover more than 2 sq. ft.
-not try to run to deep.
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Doug
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