The first picture is a galaxy 150 dual, what I believe to be the non-stock ballast. It's rigged into the unit, with a secondary? line capped off with maurettes. One powercord into it, one cord from it to the fixture that is a thinner cord.
Second pic is what I believe to be the stock ballast. Two power cords run into it, on for one of the MH lights, one for one bank of T5s. There is one cord that runs from this to the unit and is a thicker gauge.
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