Diy filter socks?

Never done it as a filter sock but try women's nylons have used em over intakes to protect baby crays before.

I think anything other than 100% polyester will start to rot. Nylon might work, but is pretty porous. I using 100% polyester pillow cases as giant filter bags and they work pretty good.

No sump. Just a 5 gallon cat litter pail turned into a filter. I cut the bottom off another pail and wedged it onto the bottom of another and then have a slot cut on the bottom side for directional flow. The bottom of the first bucket is shot full of holes to support the media bag with about 2 gallons of Purigen in it. The addition is so that I'm not sacrificing bucket depth so more water can back up to create the pressure needed to push through this sock full of purigen. I have two 1200GPH pumps driving its own 35w UV... so figured I would make this adhoc filter to make better use of the output of these pumps.

You can see the bottom of it at the water line at the top right of this picture. The 2 submersibles are held in together in that bottom part of a cat litter jug container and the 2 black hoses run up into the UV which is above the water line.

The PVC are two overflows I put so the bucket can vent and not pop the lid when the filter starts to clog.

The whole thing is hid behind the solid wall part of the tank so you can only see it by looking down this long end.

Spiff44 I never get tired of seeing your tank.

It's what I strive to have one day when I have the room or one

Rich