Sealed room, window ac unit, co2 ???

Your best option is to supplement the CO2 in the room. Window A/Cs exchange very little air if any. Any other method of replenishing CO2 will be counterproductive to the air conditioner.

Originally Posted by AeroKing

Your best option is to supplement the CO2 in the room. Window A/Cs exchange very little air if any. Any other method of replenishing CO2 will be counterproductive to the air conditioner.

Thank you for your response, I was looking all over the internet for how much air was transferred from inside air to outside air, but could find any clear info. You saying "very little" makes me feel much better as I don't want to waste co2, or counter act the sealed room aspect.

With that being said, now onto co2:
http://www.growlightexpress.com/carb...rator-113.html
This seems like a pretty new unit for the simple fact that I haven't found much in thread about it...any input or anyone that has used it?

Room size: 12X7x5 so 420sqft...haha thats effin awesome! Anyway with this unit it from all the research I have done I think I would only need it to cut on at most for 5min an hour to keep room at around 1500ppm. Height is an issue at only 5ft so scrog with 4 plants along with 2 mums and 4 clones blocked for light reasons.

Any input on co2 with this setup would be appreciated.

I use a window a/c and my co2 ppm drops about 3-400 when the ac kicks on for 15-20 minutes.

I was looking at the water cooled gen as well but when you include the price of a reservoir, and the space for it and a cooler if you only want to run a small res and a pump to flow water, the price gets up there. I ended up going with a 4 burner regular generator for a little cheaper. You can still vent out the heat on this kind, but with my room at 32 square feet or 256 cubic feet, my gen only runs for 1 minute to bring it up from 700-1500ppm.

Just make sure you know your measurements before you get mixed up on something. If your including height in your room calculation then you talking cubic feet, not square feet. You only have 84 square feet.
And if you do a search on here for that water cooled gen, there was a decent thread about it and some guys that use it. VonDankenstein uses one im pretty sure.

Originally Posted by grindrx

Hello all,

Have done extensive reading from this as well as other sites and have learned an ass load of awesome information...thanks.

I have a couple of questions that I can't seem to find agreeing answers to.

My question is regarding co2 levels in a sealed room..well almost sealed.

A room that is entirely sealed except for the window ac unit as it needs exhaust to cool properly.

Will co2 be needed, or will opening the door say twice a day and the exhaust be enough?

Do these DIY co2 generators work ie yeast sugar mixtures effectively?

Any input on this setup would be appreciated..

Thank you.

urbangrower.com he does nuthing but sealed rooms, i run co2 15 mins a day ina sealed room with my ac running 24hrs

A window AC is a great idea to cool a small room like yours. With 420 sq ft, you only need 1000btu for the actual space. calculate an additional 4000btu for every 1000w lamp and your set. Using the perfect garden on the see more buds DVD 3 video, you can see how they had two sets of AC, Dehumidifier and Window AC in each of the boxes. Perfect setup.

As far as CO2 supplementation, using a burner means you will need to deal with the excess moisture that the burners will produce. In most small box grows, I have seen a dehumidifier with the burners. You can sometimes get away without the dehumidifier if you have tanked CO2. Tanked CO2 is also easy to use to kill spider mites as well as sterilize the room between grows. Im sure you could do that with burners as well, but tanked seems to work for something small.

I am going to a CGE (closed growing environment) after my first harvest. A 10,000btu AC should work for me. I'm going to hang a burner, and put a dehumidifier below it. All of it controled by a climate gizmo w/ a PPM monitor. I'm doing a stadium (VSOG) with 2000w, and I might go hydroponic, but soil works great and is cheap. My space is 480sq ft. And the reason why I would go with the three of them combined is simply, getting the environment perfect makes for a great harvest.

Be prepaired for an extra $20 a month to run this all though. Headsup.

yeah if your using an ac then sealed is the best way to go, if your using a co2 burner then you will need to vent 1-2 times a day just to be safe, the good thing about the ac is it will take care of your humidity issues to

Opps I meant cubic feet...You only have to turn you ac on for 15 minutes...I have to leave mine on almost constant. Does this mean co2 supplement will be useless. Aeroking stated above with an ac unit that there is little if none air transfer from outside air to inside air, is this not true, or does co2 being pulled through the ac die as its cooled and pushed out?

Rudiger, what type of burner are you using, does it connect to propane tank or do you have a gas line? If you use a tank, how often are you filling it? Room sealed or vented?

Awesome video ugmjfarmer watched all of them..thanks