Quote Originally Posted by keeko
hey there onequickmove. im not the most knowledgeable person when it comes to ventilation but for cooling a 250watt i believe you will need atleast a 250cfm fan to exchange the air atleast twice a minute,which is recommeneded* (somebody correct me if im wrong)-.:twocents:
This doesn't make sense for a whole lot of reasons....

You need to cool your light AND you need to vent your grow space. You can push/pull the air thru a cooled fixture. If your grow space is the source of that air, you are venting it at the same time.

PC :smokin: