So I have a small grow box. About 2.5 sq. ft. with about 35" in height. I was wondering if putting an air purifier inside the box would be enough for air circulation? Would this be good or bad for the plants? Do I need more ventilation? Can always rig up some PC fans which I was planning to do, but wanted a lil more insight. Thank you. I also thought about getting the purifier to put inside the grow box to help with the smell...

BTT