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How to carbon scrub a tent while injecting co2?

beats6789

Member
Hey everyone as the title illustrates, I am faced with a problem.
I have a 4x4x7 grow tent, it is by factory sealed; up to the user to open vents for cooling thus making it unsealed.

My concern or problem is this. I have a 600w cooltube with a carbon scrubber attached to the end duct inside my tent. So inside the tent is the scrubber with a duct routed to the cooltube and the cooltube routed to a vent in the tent to be exhausted away. I want to convert to a water cooled fixture and seal the tent for co2 injection. Easy right?

How can I do this and still scrub the interior air of the tent with out breaking the seal? Do I set up a stand alone scrubber that just recirculates the air in the tent or does it not work like that? Im confused, I dont know if doing so creates negative air pressure, positive air pressure or none or if it will work.

Any advice would be awesome.!
 
S

Sirus

Im in the same boat as you. I have a DR100L one vortex for

the a/c hood and a seperate vortex for my carbon filter. I know

my controller shuts off the exhaust when delivering CO2. Im

interested to see how much its gonna smell when trying to inject

my CO2. My tent is housed inside another 8x6x8 tent, sealed as

best as possible. I am also interested in any advice on this

subject. :chin:
 

junior_grower

Active member
I have done it two ways with success now.
1) ran the fan on a cap temp sensor, Ac running separately.
2) the new CAP XGC1 now has the fan plugged in and shuts down for co2 injection cycles.

I have had no issues with smell in either circumstance.
 

NiteTiger

Tiger, Tiger, burning bright...
Veteran
I know a lot of CO2 users that use air cooled lights have a dedicated ventilation for the lights, and a separate recirculating scrubber.
 

pushlimits

Member
To make a long answer short (please forgive me for not being specific) some people shut off the exhaust fan temporarily with a controller, while they shoot the C02 inside. The regulator you must buy in order to properly use co2 needs to be adjusted accordingly. there are several was to use CO2 and everyone is a little different. You are on the right track with the whole sealed room deal, But you have to have a exhaust fan to move the stale air. To put it simple:

1) Every System will need a exhaust fan in the ceiling using baffle flaps, because Co2 sinks (cold gas) and the stale air needs to be replaced with enriched air from the ground.

2) Depending on the system, and how it's distributed will give you your answer. tanks have several ways to distribute and regulate, same with generators.

3) All systems need a sealed room with exhaust and movement fans that can be adjusted, accordingly to your room size , PPM, regulators, tubes or air, ECT.

To make a long story short, there is no need for a sealed room, just make sure there are no leaks. When you chose a system then you can move your set-up around, but until then you can keep your air-cooled-light-carbon-exhaust- system and use Co2.. I Do. Hope I helped Buddy!
 

junior_grower

Active member
Sorry push your way off.
First the point of sealed room co2 enrichment is to help reduce the waste of co2. Second you don't need "fresh air".

With a sealed room you would run a can filter or the likes, with the fan sitting on top of the filter. You could then use the same fan buy ducting it, first through the ice box ( or what ever what ever cooler your using) , then through the cool tube and out the side of the cool tube blowing back into the tent.

If you choose to run two fans the the one would just scrub the air, and one would cool the room. Welcome to the world of CEA, perfect temps and 1500 ppm full time.
 

pushlimits

Member
I don't remember writing Fresh air? But I do remember writing "just make sure there are no leaks." I fail to see how I'm "off" Junior?
 

junior_grower

Active member
Co2 is heavy, without exhaust it will never move Bro.

yes cos is heavier than air that's why we all use oscillating fans, and why the filter is sat on the floor, the fan will suck co2 enriched air though the filter and spit it out at the top of the room.
 
S

Sirus

That is the C.A.P. controller I have, in the process of dialing in

now. Good to know you have no odor issues. Thanks for the

post :)
 

beats6789

Member
I dont want to exhaust my tent at all. My understanding concerning intake and exhaust vents are you need them to bring in ambient co2 and exhaust your old stale used air that no longer contains co2.

If I inject co2 what is the point of bringing in and exhausting the air? The plant does not breath o2, it breathes co2 and if it is being artificially injected and with no heat, then why exhaust it?

I want to know if I can set up a carbon filter to recirculate the air and not exhaust right back into the tent, if it will work? I know about all the timers and senors but those are to control heat and exhaust heat while minimizing co2 loss. If I have no heat (water cooled light) and want to scrub the air without exhausting it out of the tent then tell me, how is that possible?
 

beats6789

Member
Anyone? I been thinking about this for hours. My brain needs some second opinions.

Does a scrubber set up in a tent work when it recirculates the air with out exhausting it out. It should not form negative pressure but will it in a sense pressurize the tent pushing air out?

My guesses are no because in order to make positive pressure you need to be bringing air in. If the tent it sealed, it is just that - sealed, so no positive or negative pressure is formed and in theory a recirculating scrubber should work fine but does it?
 

GrowThisGreen

New member
Beats.....Of course it does my friend. Think about what you are asking......The air is going through the scrubber and getting scrubbed and if there are no holes or leaks in your tent there will be no pressure issues unless you are feeding air into the area and this air would go out of the door when opened and into any areas that are none sealed. The best option would be to pull air through your lights and on the end place a scrubber, then put a recirc scrubber in the room. ANd if you are worried about pressure be sure to seal the room then just slide your light lens and from there you can control the positive and negative pressure in the area along with getting that air scrubbed before it hits out side your control.

This is just my opinion. Good Luck. The Co2 will drain out of this lens if you do not shut the fan to the lights off when injecting but I suggest you not even allow air out of the area. Co2 is creating fresh air so to speak.

Enjoy

GrowThis
 

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