I have a 3x3x6 tent and a 600w MH/hps light In an air cooled good I plan in getting a 6 inch inline fan and carbon filter is 300-350 cfm enough to vent the room and cool the light ambient temp is around 70
that will depend on how much the filter restricts the air flow but you are very close to being out of range I would go with 650 better airflow is always better.
You don't think 650 in that small of an area would implode my tent also anyone have experience with te dr earth feeding schedule thinkin about following it on my next grow
A 6inch inline will be plenty. I'm a noob grower but i know you only need bigger for like a 5x5 tent Sent from my N9518 using Tapatalk
LOL man I use this fan to pull air through a freezer, 1/3 the area of your tent. HVACQuick - Vortex Powerfans S Series Ultra Quiet Inline Fan