Passive Intake Filters

I'm growing in a tent and last grow i had some powdery mildew problems. I had since addressed the humidity issue and cleaned the tent but i'm still a little paranoid about getting it again.

My goal is to install passive intake filters to help prevent any spores from getting sucked into the tent.

Has anyone tried is method or could recommend another techniques?

I'm looking into products similar to this:

http://multimedia.3m.com/mws/mediawebserver?mwsId=66666UuZjcFSLXTtOxTEMxs6EV76EbHSHVs6EVs6E666666--

Wondering if anyone could recommend any other products, Thanks!

i use the cut out filters for the air conditioner they are like 4 or 5 bux at home depot hope this helps they are nice and thin incrasing airflow and keepin it clean change time is about once a grow

I had pm also sucked.Spray on additives are not my first choice.Build a small table put big hole or holes add a fan running strait up underneath.Something about circulating the air this way.Does real good have lost 0 grams to pm with this method.

Just keep the air moving and the humidity in check, that's your best defence against PM (It won't grow where it can't grow.). Filtering your intake can't hurt, but it's likely unnecessary.