The standard 4" filter socks were too large for my 40 breeder AIO, so I decided to whip up some mini filter socks with my down time. In case anyone else was looking for a quick/easy quarantine project, I made 20 socks in about an hour and the cost of each sock comes out to around 18 cents. As you can see, the QC on the stitching took a backseat to speed at the end there, but they work well and perform pretty equivalent to my 200 micron filter socks. Going to finish sewing the last 20 today so I'll only have to clean my socks once every two months or so.
Hope this inspires someone else!
Hope this inspires someone else!