I have a large Carbon filter on continuously inside my garden room. I'm about to add a nice co2 Generator to the room but want to know if its neccesary to turn off the Carbon filter during the co2 spells or not? In other words will the filter have adverse effects to the co2 being generated?

I want to keep the room consistent w/ co2/ ppm levels, 1300-1500ppm, so I have the room completely sealed running 2 1000 watt lights on cool tubes and just put the filter inside so it always acts as a filter and a fan that simulates the "wind"... never have i had it venting the room out because I have been under the impression it really doesnt matter much when your running a co2 system (and even when not running co2 I still get pretty juicy tomatos w/ it being totally sealed). Right or wrong?

I figured the amount of times I open the door that that is enough to exchange all the air inside and give it a "fresh source".

Thanks,
mE22

Any ideas?