Hey guys i need a little help i have a 4x8 grow tent and im not sure on what kind of light i should buy.I know i want a HPS sodium but im not sure on what wattage i shoud get a 600 or 1000.I plan on having it vented out really good with incoming and outgoing fans and i want to have the best llight possible without over doing it with the space i have.So what is it guys 600watt or 1000wattThanks for the help