Lighting question

I have a 400 watt hps bulb and i was wondering if it would be fine to use it in a normal socket like in a lamp or if i have to go all out and get a ballast for it. I'm trying to make this grow really inexpensive.
 
I have a 400 watt hps bulb and i was wondering if it would be fine to use it in a normal socket like in a lamp or if i have to go all out and get a ballast for it. I'm trying to make this grow really inexpensive.

you need a ballast. then when you have the ballast you need to plug that into a surge protector then that into a wall socket.
 
no hps bulbs have huge e40 screw fittings and yes a ballast is needed to start and power hps/mh bulbs. even the old 75 watt hps bulbs needs a ballast
 
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