how will i set this up i am thinking of buying one will it be practical. http://www.1000bulbs.com/400-Watt-High-Pressure-Sodium/712/
if you feel confedent wireing something that could kill you lol follow a wireing diagram and use suitible cale leading to and from ballast to ignitor
Looks like a headache, if you have a hydroponic shop near ya hit it up most sell pre built systems for under 200 bucks with conversion bulbs and everything. I thought about building one too but I figure I would probably hurt myself. http://www.htgsupply.com/growlights.asp?categoryID=1&subcategoryID=155&typeID=55