Exhaust???

[DAP8026]

I am about to purchase a 224 cubic feet tent. I am going to be cooltubing a 1000w hps light so heat is not a big issue. I am, however, curious about keeping the air inside the tent from getting stale. I will using an inline exhaust fan that has a rating of 424cfm. My tent is in a 22x22 room and I was wondering should I bring in air from the outside my house via ducting or will the air from inside my house be ok? Also, should I leave the exhaust fan on continously or should it go on and off in increments? If in increments, how often on and off? Thanks in advanced for advice.

DAP8026 Reviewed by DAP8026 on 12-17-2008. Exhaust??? I am about to purchase a 224 cubic feet tent. I am going to be cooltubing a 1000w hps light so heat is not a big issue. I am, however, curious about keeping the air inside the tent from getting stale. I will using an inline exhaust fan that has a rating of 424cfm. My tent is in a 22x22 room and I was wondering should I bring in air from the outside my house via ducting or will the air from inside my house be ok? Also, should I leave the exhaust fan on continously or should it go on and off in Rating: 5

[DAP8026]

Anyone?

[VapedG13]

air from your house is ok...if you have fresh air coming in and air leaving you should be fine....i leave my exhaust fan on 24/7

[cannakeeper]

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.

[DAP8026]

Appreciate it guys.

[detroitfish]

might want to go to atleast 600 cfm for that size room eventhough its in a tent

[Farmer Rich]

I put a 445 cfm on a clone tent and it sucked the sides in quite a bit..

I'd go with 2 fans.. one for your light with it's own intake and exhaust, running when the light is on. A second fan to vent the tent with a temp controller. This would let you use a smaller fan for the tent itself. A 245 cfm can fan would do that nicely completely cycling the air in the tent just less than once per minute.

Last.. don't think heat isn't an issue, with a 1000 watt HID light in a tent you can cook some plants.

Peace, Farmer Rich

[tomatoman]

My friend has a room that is 4x8 x 7 foot high, he has 2 600,s a424 cfm fan with filter blowing out and he ran of cetral air vent set thermostat at 69 degrees will this saty cool enough you think.