In theory, I think it makes a difference. Scrubbers are at the end of the chain where the air is finally gone. The reason you have a scrubber is for the air to pass through the carbon and deodorizing it from there.

Pics would help a lot. I am visualizing a scrubbers like this one Cannabis.com Forums Message Boards - Medical Marijuana, Cannabis Club, Dispensary, News

But I have a sneaky suspicion its not at all like it if the fan is on the end????
Balkey Reviewed by Balkey on . please help with my HydroHut & Carbon Scrubber Hey Guys and Gals,,, Long time No see.... My friend has a bit of a problem Here it is in his words.. I have tried my best to help him but figured I would get more help here. Thanks kindly kd_special:thumbsup: Looking for a 100% odor free room I am currently using the hydrohut mini which is 3.25â?? x 3.25â?? x 6.5â?? tall Rating: 5