Quote Originally Posted by swamp creek farms
http://www.ecofilms.com.au/2010/08/20/diy-swirl-filter-for-aquaponics/

that is a basic idea of how one works, or you can always look it up on youtube. I just came up with a way to make one with stuff i found laying around the farm. All i had to buy was the filter medium, i used plastic brillo pads - a package for a buck. I ended up using seashells also.

I am thinking about making another one out of a 30 gallon drum. Just need to figure a way to back wash the solids out into the wicking bed or some dirt beds. Any easier way to clean it.
Wow that is great. I will build one of those.