How can I attach a carbon scrubber to Dayton blower fan?

Hooking up a filter to a Dayton Blower is going to require buying a duct intake flange for the blower. With the Daytons it's not something that comes with the fan, it's an option for a nominal fee. EcoPlus is making similar blowers now that have the flange built in. Hopefully the Dayton Blower you selected is the right size for your filter or you may have to use chunk of 'reducer' duct in between the two. You'll want to hook up the filter to the intake flange that you install on the Dayton Blower. Those blowers have a square output so you may need t fashion a way to attach it to ductwork if you can't blow the scrubbed air into the room the cab is in.

Whether or not a Dayton Blower will do the job all depends on MANY variables... i.e. what kind of lighting and the heat issues from the lighting... If you use A/C... If you are using HID lighting with a cool tube setup you'll need a more powerful inline style of fan like a Vortex or a OstBerg 6" inline fan with a high output rating. Squirrel cage fans don't have the power to pull heat off of the lights like the inline fans can in a static pressure environment. If you want to add a filter to the ventilation chain you'll need an inline fan with a rating of at least 600cfm if you're using HID lighting of any significant wattage. I think a decent sized squirrel cage fan would work fine for pulling the stink through your filter to scrub the air if you wanted to separate the two. Also, cool tube reflectors are much more efficient than older air cooled reflectors when controlling temps. I use a 630cfm Ostberg to pull air first through my filter and then scrubbed air goes through the cool tube and through 6" semi rigid duct into the attic where my fan is and it keeps temps in the 70's a few degrees above the temps in the house.

Good Luck!