Does This CO2 Generation System Work

Will these cheaper aquarium CO2 generating systems like the one in the pic actually make a noticeable difference in the quantity of CO2 in my tent?

I do not have hundreds of dollars for a proper CO2 generator, I'm disabled and live off of support thats why I'm growing, no chance I can afford one of those but my grow tent gets very hot so I would like/need some sort of added CO2

I would imagine that hauling co2 cylinders is out of the question if you are disabled.

I haven't seen or heard of such a creature for fish tanks, so I can't say for sure but it would seem like if it does a fish tank it probably won't do a room so well.

And to be honest you don't need CO2 to get great bud, so just skip it and use ventilation to bring in fresh air. It is likely that the air in your dwelling has higher co2 levels than outside.

maybe this may work for you , just ran across this today

Something like that would help so long as you don't have to ventilate to cool the grow space. Ventilation will just exhaust the CO2 faster than it is created.

If you look it up on amazon it actually has a description on using it with ventilation.

"If you have a ventilation system, place the ExHale bag in close proximity to the fresh air intake. CO2 will be drawn upwards "

It would have to put out an extremely large amount of CO2 every minute to keep up with even a moderate ventilation system. Products are advertised to sell, and yeah the placement would do that but the PPM increase would be minimal, maybe a few PPM.

Actually measuring the CO2 levels with an autopilot logger is probably rarely done since growers using this method are on a budget. My bet is you don't see any real difference in CO2 levels when venting.

I agree ,

Renfro said:

I would imagine that hauling co2 cylinders is out of the question if you are disabled.

I haven't seen or heard of such a creature for fish tanks, so I can't say for sure but it would seem like if it does a fish tank it probably won't do a room so well.

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I only need CO2 because my tent is very hot (and there's not much more I can do to cool it down that I can afford) so CO2 seemed to be the thing to deal with that. Temps about 85-90 and it's not even summer yet.

I am using an exhaust fan that pulls 203 CFM and the tent is 2x4x5 so there is a noticeable negative pressure and I think it's pulling moisture much faster then in past grows because they're pretty dry and thirsty after 2 days (5 gallon 75%/25% coco/perlite 6th week old).

I will take a look at that sdrob, I saw that on amazon but never even clicked it because there are just so many junk products that dont do shit lol.

My ventillation is at the top of my tent, so If it says "If you have a ventilation system, place the ExHale bag in close proximity to the fresh air intake. CO2 will be drawn upwards " that's uh a bad thing.

I can get tanks if that is the answer I just figured that the cost of tanks and a regulator would be quite high. Is there a portable A/C unit that works well for this small a grow tent that is affordable? Basically just want the cheapest way to let my ladies grow comfortably

guitarguy10 said:

I only need CO2 because my tent is very hot (and there's not much more I can do to cool it down that I can afford) so CO2 seemed to be the thing to deal with that. Temps about 85-90 and it's not even summer yet.

I am using an exhaust fan that pulls 203 CFM and the tent is 2x4x5 so there is a noticeable negative pressure and I think it's pulling moisture much faster then in past grows because they're pretty dry and thirsty after 2 days (5 gallon 75%/25% coco/perlite 6th week old).

I will take a look at that sdrob, I saw that on amazon but never even clicked it because there are just so many junk products that dont do shit lol.

My ventillation is at the top of my tent, so If it says "If you have a ventilation system, place the ExHale bag in close proximity to the fresh air intake. CO2 will be drawn upwards " that's uh a bad thing.

I can get tanks if that is the answer I just figured that the cost of tanks and a regulator would be quite high. Is there a portable A/C unit that works well for this small a grow tent that is affordable? Basically just want the cheapest way to let my ladies grow comfortably

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If you have heavy negative pressure then you should be able to help the air exchange rate in the tent by having larger passive intake vent/s. You don't need allot of neg pressure for the carbon filter to do its job. This will help with tent temps.

Put your grow tent in your bed room and have sex every day, leave door and window closed. Your ppm will be 2000+

f series said:

Put your grow tent in your bed room and have sex every day, leave door and window closed. Your ppm will be 2000+

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Might get a little hot in there...

The room the tent is in, how hot is it?

Are you exhausting the tent outside or just back into the room? (Not ideal)

It's in a pretty small bedroom (no sex sadly). It's temp is about 80 right now, inside tent is 87 at the moment (I hate fahrenheit!!) . We have to use our homes A/C very sparingly because the cost of electricity in my province is just insane (esp. when you count all the electricity I'm already using to run this grow).

At the moment it is exhausting to the same room, I've yet to come up with a solution to remove it effectively, although I did just realize it's easy to get to the attic from where I am so I will try to get some more ducting to move it into the attic if I can.

The intake on the other hand although passive at the moment is ducting that goes outside my window, so it's always drawing in fresh air from the outside at least. Yes I've heard that larger passive intake surface area. I had a smaller in-line fan that was actively intaking but it broke so now it's passive, I dunno really how to open up more vents without letting light in or having a nightmare of ducting lining my room.

I am pretty sure I am just making this up in my head but I feel as though this negative pressure keeps pests mold etc. out because I have never had a grow in the past with none of these problems and feel either lucky or it's the negative pressure or something that I havn't had any of these problems yet (knock on wood).

Are there any small A/C units that are cheapish, don't use a ton of electricity to only cool a small 2x4x5 tent and small enough to fit in there that you can recommend.

I also switched the lights to be on at night where presumably it's cooler and cheaper electricity

Ducting into the attic is ok in the summer but in the winter venting hot humid air up there will cause condensation and black mold. Not a good thing. Can cost a fortune to have the damage repaired.

Your room is too warm, so the intake air is already 80 degrees. Hard to cool a tent with 80 degree air. Right now your tent is running 7 degrees hotter than your room, so the ventilation system simply needs access to cooler air.

I can't recommend a unit that would fit into the tent.

If you put a portable AC unit into the room and get it down to 72 degrees then your tent would probably stay around 79 - 80 based on your current 7 degree differential. Vent the tent outside to save energy otherwise the AC unit will have to fight the heat from the tent.

When shopping for an AC unit, look for "Auto Restart after Power Outage".

Most portable AC units will require a condensate drain line so plan accordingly. If you must drain uphill you should look for a unit that has a condensate pump built in.

Not sure how handy / able you are to do a little diy but this is about as cheap a cooling rig your gonna find/build

It works like a charm too, weve made them at the cabin numerous times during the hot months over the years, its a bit ghetto but its better than the alternative lol

you could probably find enough things around your house to build it and its really pretty simple.Once its built, you just make sure you always got a block of ice ready to toss in. Wont cost much at all

Hi I'm new to this site.

Does anyone know if having two extractor fans in one grow room will lower the temp without causing any problems.

My lights on temp is 94f and the only option I have is to add another extractor I have an intake also.

guitarguy10 said:

I am pretty sure I am just making this up in my head but I feel as though this negative pressure keeps pests mold etc. out because I have never had a grow in the past with none of these problems and feel either lucky or it's the negative pressure or something that I havn't had any of these problems yet (knock on wood).

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Negative air pressure is for smell and air exchange.

Buna said:

Hi I'm new to this site.

Does anyone know if having two extractor fans in one grow room will lower the temp without causing any problems.

My lights on temp is 94f and the only option I have is to add another extractor I have an intake also.

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Intake from outside will definitely lower temps

Intake *is* from outdoors, like I had said "The intake on the other hand although passive at the moment is ducting that goes outside my window, so it's always drawing in fresh air from the outside at least"

That is ghetto af diggs lol, a bit big for my tent's space though.

I'm not sure how to get more passive intake, that would require opening up holes in my tent and letting light in or putting all sorts of ducting in there that would just litter my room trying to get it across to the window outside. How do you guys get 'more area' for passive intake?