I have a 210cfm inline on the end of my cooltube drawing through an elf carbon filter( see"cabinet pics...finally" link in hydro section) The 210 moves that air through this stuff like a leaf blower so yours will be twice that...more if unrestricted. So moving enough air will not be a problem. The tent should have passive air holes so that fan will prob suck the tent in a little with neg pressure. That lamp makes a tremendous amount of heat so cycling the fan is not a good idea. They use some amps and start slow till speed pics up so it would need to restart as soon as it stopped=pointless. The air in the room should be good, that fan will cycle the air in that tent in under a minute soo stale air will not be a prob.