Two fans off one speed controler?

I am attempting to use a window A/C unit to cool my 4-1/2'W x 8'L x 6'H tent. What I want to do is build a compartmented box that will take the place of the front cover of the A/C. Then run two 6" ducts to the tent. Clearly, the built in fan in the A/C is not going to be strong enough. After looking inside the A/C, I can see that it is poorly sealed. I need to keep the pressure from a booster fan neutral to ambient pressure. My thought is to use two fans, one (with a carbon filter) pulling air from the tent and pushing to the A/C, the other pulling from the A/C and pushing to to tent. I am hoping that, if I run both fans off the same speed controller, the two fans will move an equal amount of air, thus NOT pulling outside air in or out of the system. Can one run two fans off the same controller? Has anyone tried ducting a remote window A/C this way? The two fans are identical. I have a complete co2 system (tank, pressure regulator with flow meter, and CAP PPM-4 controller) I intend to use. The evaporator coil must remain open at the bottom for condensate to drain, otherwise I'd just use spray foam to seal everything up.
Any advise or input would be appreciated.

do it right thats the best advice you will get, just use the ac to cool the room the tents in and seal the damn room, vent the hoods/lights seperate outside the room, if you wanted to you could add a scrubber filter to the light venting to prevent any possible smell, this is exactly how i vent my same size tent with 2k watts, i maintain constant stable temps day or night humidity is kept in check by the ac system, good luck

LT1RX7 Drifter said:

do it right thats the best advice you will get, just use the ac to cool the room the tents in and seal the damn room, vent the hoods/lights seperate outside the room, if you wanted to you could add a scrubber filter to the light venting to prevent any possible smell, this is exactly how i vent my same size tent with 2k watts, i maintain constant stable temps day or night humidity is kept in check by the ac system, good luck

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I had considered this, but I would need 8 times as much co2 and I don't think the A/C is big enough to cool the whole room. It gets 95F+ and humidity is 70-90% here in the summer. I used to have the tent backed up against the window the A/C is in, but two sides were completely inaccessible that way.

how bigs the room the tents in how many btu does the ac put out

LT1RX7 Drifter said:

how bigs the room the tents in how many btu does the ac put out

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The room is 191 sqft, the A/C is 5,200 BTU. I have a remote thermostat I could hook the fans and A/C up to with it (the thermostat) inside the tent. That will save having the two fans running all the time.

scrubbing the air in the tent and venting to the room and keeping the room sealed is your best bet, vent the lights seperate and use the ac to chill the room and just set it on a thermostat, set the fan in the tent that runs your scruber fan with thermal speed controller that speeds up if temps rise to high, run the fan cooling the lights WFO keep the ducting as straight as possible with the least amount of bends needed you got enough ac/btu's to run 2k with co2

I tried cooling the whole room with just the window A/C, with 2 vented 600 watt lights lit and the tent opened up and a floor fan blowing thru it. Turned the central A/C off to simulate sealing the room. Temp rose to 90 in 2 hours (30" under the lights), so that tells me the window A/C can't handle the load. I've only got 2x 15 amp circuits to work with here, and they're shared by adjoining rooms. The window A/C leaks a lot off light even tho I tried to seal it, first with black paint, then with tape. I've already built, but not tested, a box that seals the front of the A/C, separates the intake and exhaust and provides 6" flanges so I can duct it to the tent. That will fix the light leakage. Hopefully, I won't leak too much co2. If this doesn't work, I may ditch the tent and put up 1/2" foil-faced foam partition walls to box in the corner where the A/C is. My clones will be dead before I build it, but I've got some Big Bud seeds I wanted to try anyway.

Update if anyone is watching. Went with the tent cooled by 6" ducting to the A/C. Use 2lbs. co2 a day. Running the A/C at 80 during lights on and 75 lights off. Would run it higher during lights on, but have a 4" duct branching off 6"duct from A/C to cool reservoir. Anything above 80 and the reservoir starts to go over 70. Lights off the A/C never kicks in. Used 2300 KWH in June. June without grow last year was about 1000 KWH.