sorry cant be much help as I have never done it but a thought for you, if you brought in outside air and ran it through the lights,you wont need a filter and from what I understand, filters cut airflow & require a much larger fan.
If you duct outside air to your cooltubes and then out. you don't need a filter. You would need the filter on your room venting.
It is a Q thats hard to answer. I don't know by personal experience but read in another thread of someone having a similar prob. and their solution was 2 fans: 1 can fan and one inline. The inline was used for cooling and the can fan for filter. Wish I had the link.Good luck!OK, again, thats really nothing more than your opinion, as there is no absolute in security, but just so we can drop this, the air will be vented from outside the grow room, but INSIDE the grow operation (from a cooler veg room), so a filter IS needed. Satisfied? If not, start a different thread.
Te question is:
How much fan is needed to cool 2 600w hps AND thru a carbon filter at the end.
It is a Q thats hard to answer. I don't know by personal experience but read in another thread of someone having a similar prob. and their solution was 2 fans: 1 can fan and one inline. The inline was used for cooling and the can fan for filter. Wish I had the link.Good luck!
sorry dude. saw the vented form outside. to cool 2 600's and finish with a filter would take alot of air movement. your right the ducting would have to be very air tight not to back up and leak. You might think about a system to vent the odor and one to vent the lights. my setup is what you want to do without the filter. Or you might be able to put a fan before and after your lights to stop air from backing to the light.OK, again, thats really nothing more than your opinion, as there is no absolute in security, but just so we can drop this, the air will be vented from outside the grow room, but INSIDE the grow operation (from a cooler veg room), so a filter IS needed. Satisfied? If not, start a different thread.
Te question is:
How much fan is needed to cool 2 600w hps AND thru a carbon filter at the end.
more to it then just cfm. but 240 cfm will cool just about any light. then ducting size. how far the ducting runs. ambient temps.Yeah, that looks like the system.
I guess my real question is, how much CPM is needed per watt of HPS lighting?
IE - 600w HPS requires atleast blank CPM to cool to 72 degrees ect ect ect...