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]

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 :cool:

[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.