Keepin my ladies cool...

So I just finished my first harvest and have decided to rebuild my grow room and add some more gear, mainly co2 enrichment. I averaged about a pound per 600w light so I feel pretty good about it. Id like to use a tank and regulator. I want the room to be airtight and am lost as too what kind of ac too install. From the research I have done it seems that most air conditioners pull some air from inside the room and exhaust it too the outside. Obviously, this would be super sucko for a sealed environment.

All of the window installation fans seem to exhaust room air through the window and even the portable units have a single exhaust tube that sucks air out of the room. I did find some units that have "dual exhaust". They claim that air goes in one and out the other. Sounds good but the way wikipedia explains a/c units makes me think they still remove some air from the room. Will one of these work and maintain a sealed environment? What type of air conditioning have you used? in a sealed room?

thanks in advance for the help, this one has got me stumped and I really want to bring my garden up to the next level.

Good question im waiting like you for an awnser

yes they will maintain a sealed environment. they have these types of AC's at grow shops for specifically this purpose. i kick myself in the ass for not investing in one of those when i bought my AC.

ohh yea, how many watts did you have in total and how many plants? what types of lights did you use throughout your grow cycle? mh for veg and hps for flower or combo of both?

In veg I used 850 strands of white christmas lights I got at the dollars store. Nah, not really. I have been experimenting with a variety of lamps/bulbs/shades etc. I have also been tuning my hydro system for four months now, I think its a pretty strong system. I already have cool tubes so thats no problem. I am sure I have spent more on equipment than value of weed I have grown (or will grow), but this is definately just for fun.