Industrial lighting?

[patpare]

A metal halide ballast will have the same components weather you buy it at a pet store,hydroponic shop or even at you local hardware store.I usually get my ballast at hydroponic stores,you will not find proper bulbs there but the ballast are the same.So the warehouse ballast will work just make sure your bulbs are not the pulse start type,most of the older ballast in warehouse will not fire up pulse start bulbs.