Cooling the 600 W Cool Tube Hps

Ok so if i have a 600 w cool tube running with a 6" htg supply carbon filter setup, in a 4x4x7 grow tent can i attach some ducting with the filter to the end of the cool tube and run the air out with the fan provided for the carbon filter? Would it be enough to cool and reduce the smell all in one, also thinking ahead i am going to add another 600 w cool tube in the near future, can i hook both together using the carbon filter thanks

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I have a 440 cfm hooked to a 6 inch carbonaire filter and then cooling my 1000 watt. Got light less than foot away from plants with no problems. Don't know about two lights though, guy at grow shop said that its best to have two fans, one to cool lights and one to vent room, I'd set that up before I got the new light.