How often do u guyz clean your pre-filter?

How often do you guys clean your pre filters? I'm talking about the pre-filter that goes around the carbon Phresh filter.

Never have.
Mine have always out lasted the carbon filters since my room is clean, pre-filter seems to be more there to stop the carbon dust falling out.

Once, only because i had taken everything down to take s short break from growing. I hand washed it, as gently as i could but noticed the prefilter got bigger and didnt fit quite so snugly around filter, which stopped it from doing its job. Pre filters are cheap, just get 2 per carbon filter so you can just switch it out, if you think its getting too dirty. Filtering your intake air helps a lot too. I have a rectangle air intake to my room and use a furnace filter, it catches a lot and i keep things clean.

Thank u guyz i do appreciate that!

If your environment is consisting of poor air quality or high dust, you might find the prefiter to get brown and dirty, then you can wash it in a bucket of water or in the bath with a mild dish soap and toss in the dryer on low/no heat for maybe 5-10 minutes. Good as new and spanking white.

When gummed up, they will start to choke out the scrubber's ability to filter much.

I cut it off. I replace my filters pretty frequently.

I do it every time the room is empty. No matter what. I do everything that might need cleaning at that time. I don't want to ever have to clear out my area for something silly. The cleaner it is the less stress on the fan ----> more fresh air for the same amount of money.

Negative pressure already exists don't let dust make the fans work harder.

Pre-filter are what 15.00? I just change mine every 10 week runs. Swap my carbon scrubber after 3 flower cycles.

i quit using mine

I just replace the whole thing once a year.

I wash mine monthly because my room is dusty as hell. It gets pretty dirty too. Same with my A/C filter.