Awsome equipment and exchange of info. Maybe straightened out was wrong wording. It's hard to keep up when your out of the loop for just a little while.

So if I were to A/C a small room and go with a co2 ppm foot print of normal outside or just above I could avoid venting all together ? Or just most of the time ?

You got me thinking man. That is what's it's all about. I enjoy it.

Thanks xcrispi.