I'm building a new cab in a month or so. I have my lighting, exhaust, intake.. basically everything figured out. But I also have a C02 system that I want to employ, but I'm running in to a problem.

My intake fans are two 5" Axial fans (basically bigass computer fans). I want to mount them down low, on the opposite side of the cab as the exhaust. I will set them and the exhaust fan to come on twice and hour and exchange all the air in the cabinet. When the fans are off, I will pump C02 in to the cab (it's a small cab, so getting it to 1500ppm will be quick and easy). However, I cannot think of a way to keep the C02 from escaping through the intake fans. I have shrouds over the fans on the outside of the cabinet to keep light from escaping or getting in, but it's light tight... not air tight.

Does anybody here have a solution for keeping their cabinet air tight when all their fans are off?

Any help is greatly appreciated.
included Reviewed by included on . C02... but with an intake fan... hmm I'm building a new cab in a month or so. I have my lighting, exhaust, intake.. basically everything figured out. But I also have a C02 system that I want to employ, but I'm running in to a problem. My intake fans are two 5" Axial fans (basically bigass computer fans). I want to mount them down low, on the opposite side of the cab as the exhaust. I will set them and the exhaust fan to come on twice and hour and exchange all the air in the cabinet. When the fans are off, I will pump C02 Rating: 5