Originally Posted by paulthenurse
Can you give me a quick run down on how your filter system works?
Well, the main components are:
Settlement tanks (two 55 gal drums) The water enters these from a bottom drain in the pond, and the water level remains the same as the pond. It enters one, and passes to the next one where the pump pulls up the water. These need to be manually scooped out once or twice a year. Baby fish sometimes find there way into these. When they do, they usually grow at a much faster rate than those in the pond. I have to get them out and put them back in the pond, by which time they are too big to find their way through the bottom drain again.
a three phase pump wired up to a variable frequency drive (not too expensive if shopped around for on ebay) This makes the flow adjustable, but more importantly cheap to run.
A UV filter (also easy to find on ebay) This is the long tube with a cable on the end. Bottom left of the photo in the previous post. This kills the algae before the water enters the filters.
Five 55 gallon drums (Free from Pepsi) Three are the ones in the photo in the original post. They have a false bottom 12" high and are filled on top of that with lava rock. The water enters the pipe at the top, which delivers it to the bottom. The water rises through the lava rock and exits to two waterfalls in the pond. All you have to do to clean these is open a ball valve at the bottom two or three times a year and the slurry and water is piped out over my hop plants.
Oh yeah, I have also added an outside spigot to the outlet from the pump so that I can shut off the waterfalls and water the garden with the pond water.