Normally an HPS is kind of long and straight and MH has the big bulg in it. You need HPS for flowering. I got a 1000 HPS coming from insidesun for 200 bucks I ordered saturday and wating. Sorry Donnie189 but you need to do a whole lot of home work. No offence. I will help. But where I come from sattelite hacking world they tell you to read till your eyes bleed and then read some more. Sorry but you should know the difference between them. Go online and to the sponsers of this place and look at lights. I can't say about quick I try to plan ahead.