I've got 2 400's, and lemme tell ya! They get HOT! If you don't vent the hood with a powerful exaust fan,it'll be so hot in there! You might be better off using 2- 250HPS.That way you could worry about the venting of the room overhead.Get some cool air from below!I've acctually never used such a small grow area! My grow area is 8ft. long,6ft wide and 57inches high.I have the extra bit of room inbetween the joist's!Another 10 inches of head space! Stays a constant 79-80 tops! when the lights are on.I only have 25 plants in that area! Take your time as to,not be hasty on the choice of light you purchase!Cause DYNOMITE comes in small packages!Lil' might be better,in your case.Then you could buy a kick ass fan as well!265 CFM or a 465CFM.If you choose that 1000 watter? Go with the 465cfm.If you get 2 400's,go with the 465cfm.If it's the 600? Vent the hood directly with a 265cfm.Not blowing on the light! That tends to dispurse more heat in the room! but,pulling across the hood from the tip or end of the bulb.you'll end up with some issues as you get into the grow! ( 9 out of 10) They tend to not be good at all!The issue's!

Ga Grown