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Yeah, I'm sure they're just standard output ballasts... thanks anyway jjgomillion. Thanks Shane.... are you sure noone makes a 4bulb VHO ballast that lets you control one or two bulbs seperately? It's just the price that sucks. I can get a 660 that will run my 4X48" VHOs for $250. The 430 is...

48" Electronic VHO ballasts?

I will (eventually) be setting up a 72gal bowfront reef system. Any opinions on lighting options would be greatly appreciated! I'll be going with a VHO setup for sure. 4 bulbs, and I'd like to be able to operate them seperately, or at least 2 at a time. Do any ballasts offer this feature, or...