I have (2) mars 900 watts leds. In a 5×4 grow area. I ll be growing buckeye purple from Melvanetics. I'll be bringing in fresh air from under my house. Could I use a regular a/c filter to stop any unwanted things from coming through the vent?? Thanks for anyone and all info.
I settled on this filter here.
It has a 6" flange and will filter out a majority of what you don't want.
It is washable & re-usable like a k&n.
You can also be re-assured that it is designed with minimal air restriction in mind.
Most filters with the label "grow" associated with them seem to run around $70-$90.
But this one is only $30.59.
I have it installed on my tent.
It is great :).
It helps keep contaminants out.
As well as helps keep my air cooled light fixture dust free.