cooling room

ive got a 6" fan what pulls about 450 cfm going into a powerplant aircooled hood with a 600 hps, my temps arnt bad at about 80 degrees but its starting to get hot here so thinking ahead, the fan is pulling through the cooltube and also extracting the room through the hood, so my question is if i put a Y piece in the ducting so i have the same fan pulling through the light and sucking in the room will it cool the room better? or will it make no difference, thanks for any help.

No pro here but it seems to me that the air will take the path of least resistance so if it has a choice of a clear run of pipe or going around a bulb i would think it would suck more from the clear run and not cool the light as much. I dont know if it would make that much of a diff though. With that being said a 450cfm fan should have no problem cooling a 600w hps i would think. How big is the room your fan is extracting and what is the difference in your ambient compared to your room temp?

my room is 5 x 4 x 4(height) and with lights out it sits at 71-72, like i say its starting to get hot here and ive just been to check and its got upto 86 degrees (not really worrying yet) ive got a 4" intake as well, do you think if i had my oscillation fan blowing towards the extraction point, as in blowing the hot air towards the hole that would make a difference?, its now blowing across the tops of plants but blowing away from extraction, thanks for your help.

someone must of try this? 1 fan extracting light and room through a Y piece v-s extracting room through the light? thanks

You can try that but your still pulling 450cfm regardless of how you split it up and if the air is split it probably wont cool your hps as well. Do you have 12'' of intake ports open? It should be double your exhaust port. Try running your intake right behind your fan with ducting and aim it towards your light so its kinda pulling air in and up but is still passive. The most effective way to use the cooltube would be to run it: cool 72 degree air from outside your box-->Light --> Out of your box and on the same timer as your lights. That way your not using humid hot air to cool your bulb and thats a big fan for an 80sf tent when your lights are off. To do that you would have to have another fan to replace fresh air and control humidity though. Maybe a smaller 150cfm fan that doesnt run 24/7. It would save on your wattage too.. Probably not the answer you were looking for but good luck