questions on sealed rooms with co2 and AC

Well I have decided that Im going to seal my grow and use co2 and ac.

Currently I have an intake and exhaust, through the window in the room.

I have a can 50 carbon filter, and that also cools my 1000w hood and out the window.

I need to keep the light cool still so should I have it still pass through the carbon filter, and light, then just leave the exhaust expelling in the room?

My main concern is smell, and lamp heat.

I will have ac, and co2 and im thinking of running the hot exhaust from the ac to my homes heating ducts (since we dont use the houses heater, and we have no central air.

Any thoughts on this.

How do you guys set up a sealed room?

I've never done a sealed room, so I could be wrong here but I would think with a 1000w you would want to vent it out the window rather than into the room. It would make your a/c work that much harder to keep things cool. It'd be redundant, basically. Your idea for venting through your ducts is a good one though, just ensure you've got the smell in check, otherwise your whole house will wreak.

They way i have my room set up it as so:

I have a 1000w magnetic ballast running a hortilux bulb inside a Raptor Reflector. I have a 6inch.Active air Blower (600 cfm) on the raptor/

light and i have a 8 inch active air inline booster fan 488cfm for the cooling of the room. THis is attached to the Carbon filter.


Basically the ducting and fan for the light are straight through with no filter. It pulls air from outside the grow tent and expells it out the

other that is attached to 6inch ducting.

The carbon filter sits high in the tent. after that is the Inline booster fan then ducting out the tent.


Then the ducting from each meet at the top of the attic. where i have a" Y " two 6 inch inlets and one 8inch out let. Both the ducts get

attached to the inlets and the air from the room passes through the light ducting and into the attic. The air from the grow room pass

through the carbon filter inline booster an in to the same attic.

Just make sure you get big enough fans and what not. With a fan speed controler. It's better to have too much power and be able to

control it than not have enough and have a hot smelly room.

Feelinit said:

Well I have decided that Im going to seal my grow and use co2 and ac.

Currently I have an intake and exhaust, through the window in the room.

I have a can 50 carbon filter, and that also cools my 1000w hood and out the window.

I need to keep the light cool still so should I have it still pass through the carbon filter, and light, then just leave the exhaust expelling in the room?

My main concern is smell, and lamp heat.

I will have ac, and co2 and im thinking of running the hot exhaust from the ac to my homes heating ducts (since we dont use the houses heater, and we have no central air.

Any thoughts on this.

How do you guys set up a sealed room?

Click to expand...

Yes, you want a "closed loop" lighting. Meaning pulling air from outside the grow area (with a fan, obviously) through the lights and exiting the grow area. That air should never enter the grow room. Only the lights. Now typically you would run a carbon filter as a "scrubber". Meaning you will run it 24/7 and it is cleaning the air. Your fresh air is now produced by you, The AC and the co2 will do that. I would just duct your AC out of a window/house. Just me though. Now I sealed my room with panda film and duct tape. Everything has panda film on it. the ceiling, floor, all walls via a staple gun. Everything slightly overlaps and is duct taped together. I even taped the staples as well. I also insulated all my ducting so no heat or as little as possible escapes from light to light. Mine is a little more elaborate than that but that is the basics of a sealed room. check out the clip I posted my room is completely sealed.
http://www.youtube.com/watch?v=TFcSqCIoI6k&feature=mh_lolz&list=HL1312688442

Here is how I would do it.

Wow what great responses!!

Thanks guys the closed loop system makes sense. I was hoping I could get away with not having to have the room window open at all. When it rains I know water comes in a bit, plus im wondering if my neighbors are wondering why the window has two ducts in it.

How do you guys hide the fact that you have an open window with ducting, and rain?

Let me get a little more detailed in my setup.

I have a bedroom 11'x18'
In the room I have a 4x4 tent for vegging with 432w t5 ebb and flow table, and I flower outside the tent in ebb and grow buckets with 1000w

I have an intake from the window into the veg tent, and exhaust into the room where my flowering girls are.

I have a exhaust pulling through my filter and my 1000w light and out the window.

I could probably exhaust under the house, but I cant above because there is a floor above.

What about the smell from the AC exhaust?

Thanks guys

how often do you use the carbon filter exhuast. i am having trouble. i want to keep the room sealed for 2 hours to soak up the co2 and then 5 minutes every hour to exhuast, i have a 540 cfm and a 6x24 phresh. 8x10 room. 600hps. one of the two auto is looking a little saggie and yellow is. while the other one is great, weird?

What kind of AC are using. If its not a mini split or at least a dual hose portable you will just be wasting your Co2 the AC will suck it all out.

pacmanII said:

how often do you use the carbon filter exhuast. i am having trouble. i want to keep the room sealed for 2 hours to soak up the co2 and then 5 minutes every hour to exhuast, i have a 540 cfm and a 6x24 phresh. 8x10 room. 600hps. one of the two auto is looking a little saggie and yellow is. while the other one is great, weird?

Click to expand...

You dont need to exhaust, I keep my scrubber on the floor with the fan attached to it. The scrubber cleans the air and your plants take in Co2 and release oxygen or "fresh air".

thanks thats what i was looking for, keeping the co2 in the room, i had an exhaust and it was blowing out cold air. so i sealed it in. been running good at 70-85. going to use the co2 boost. they look great already. p.s. i am using my a/c unit from the house. split it off in two rooms. veg/flower. house is at 77'. and the room with lights on is 75-85. seems to work.

BeaverHuntr said:

You dont need to exhaust, I keep my scrubber on the floor with the fan attached to it. The scrubber cleans the air and your plants take in Co2 and release oxygen or "fresh air".

Click to expand...

Exactly how I do it! How else can you guys call it 'sealed?' The only air that EVER leaves my grow happens to be the air that follows me out. She's sealed air tight, or at least to the best of my ability. Fresh air? Haha, co2 and a scrubber+dehuey
I have a 8'x12' and usually run around 2K watts. CO2 + open hoods + a 9K btu mini-split........a bottle of co2 last me 2-3 weeks at 1300-1500ppm = that's sealed. I do need an aditional dehuey for lights off because the mini wont switch over to different modes on its' own. Sh*t, I make it 2/3's through flower recycling the same water via mini and dehuey before I even need to bring any in for another flush. My res's do run high(75!) and I am waiting on a chiller atm, but I still have not had the issues you'd expect.

Smell and stealth were always my major concern.....and smell blew it all.....I tried it all too. Sealed would have had me on the right foot out of the gate......if I knew then what I knew now......dont we all say.

IMO, a minisplit is a must to solve your issues. Or at least if you want to use your co2 at max. There are many stealth answers of how to deal with the heatpump(outdoor unit). Mine has it's own shed. A buddy of mine hangs his in his attic as well as someone on here or IC. And you have crawl space?

Good luck! Le tus know what you do and how it goes please!

peace