HPS Lighting

Hey, Guys! I am looking to get an HPS lighting setup between the range of 250w-400w. These will go in a grow room that is 3.5'Lx2.5'Wx4.5'H, and possibly be over a scrog setup (or a SOG design). What size reflector would be best for a room of this size, to get maximum coverage and penetration? Are there any brands/styles of HPS lighting that are not recommended for growing?

I only ask because a guy said he would sell me his two 400w HPS lights/reflectors and 4 extra bulbs for $40. Sounds too good to be true, but I will not know for sure until I see them. I just wanted to have a specific idea of what I characteristics I should be looking for when I check these bad boys out? Thanks!

best bet is to look up reflecters they tell you coverage area at max hight

Don't forget you need a ballast... And some bulbs don't work with digital ballasts (hortilux comes to mind)

Never buy a cone or umbrella reflector, stick with a wing or a hood they concentrate more light much better.