So I'm nearing the conclusion of researching and planning a tent setup. Was wondering about heat and ventillation. I'll be getting a 4'x4'x6.5' tent and putting a 600w mh/hps inside of it. Currently my plans for ventilation is just one 240cfm 6" inline duct fan pulling air through a carbon filter through the top of the tent. I'm not sure if this is enough because I have never dealt with something as powerful as a 600w light. From a heat standpoint, is it enough to keep temps in check with just my one inline duct fan, or do I need to get a secondary 6" fan to directly blow air over the hood to cool things down? Ambient is 72-72F right now and will be 62-64F in the winter, and I hope to be able to grow year round.