Bucket Trickle Filter

Go to the Hardware store and buy a bucket $10. Drill a hole in the side of the bucket, about 2 inches (5cm) from the bottom. (to allow for a sludge sump). Cut some wide diameter plastic PVC pipe so that you can stand them in the bottom of the bucket and mount a grill on it (put some cuts in the end that wil be the bottom), I use that white plastic checker mesh for the grill. The grill needs to be just above the hole you made. Now fill the bucket with a media of some description, I have used scoria rocks here but have since up graded to Bio-Balls because I got them cheap. Cover the scoria/Bio-Balls with a circle of filter wool. The schematic diagramme (Right) shows the basic construction of the filter.


 

Above view of the filter, showing scoria & filter wool.

 

Next is the lid and spray bar set up. The most expensive part of your filter will be this bit. (The spinner) You must mount the spinner into the centre of the lid.

Other than some end caps, the rest is just pipe. The photo shows an exploded view of the spray bar assembly.
 

This is what it should look like (the lid & spray bar assembly) when assembled, I have cut holes in the lid to assist gas exchange (no idea if it helps or not *shrugs*)

That's it, water goes into the top and comes out the bottom! Stand the bucket in a deep plastic tray, put your pump and heater in the tray (careful not to have the heater touching plastic!) and your up and running.