As a Rottweiler owner, allow me to suggest pond pump filter. You can buy 2 or 4 inch-thick "squares" of it from a pond shop. It lets air through really easy, takes forever to clog, is easy to clean or wash, and stops dog hair 100% (not pathogens though).
That’s pretty much what I use everywhere else. I have some thinner stuff for the intake that should keep the dog hair out, and I just have to find a good way to attach it to the ports on my tent. I have a Rottweiler mix too, but she’s not the bad shedder. My red heeler and German Shepherd are the bad shedders.
Anyway very pleasant surprise today. Anyone who’s been following my grows knows that things didn’t go well with the chem pie. First only four germinated, and then I mixed up some way too hot soil and burned them. That’s all in the past and things have changed. Today they are healthy, happy, and vigorous. Oh and 3/4 ended up being female
So despite the low germ rate I ended up with 3 females and a free pack of jelly pie. Hard to complain about that. This is why I keep supporting GPS.