Originally Posted by
Fishmover
I am of the thought that if you are going to spend the electricity to move the water, you might as well filter it while you are at it.
Since the water is coming from the pond directly to the filter you will need mechanical filtration for sure.
YOu could always go with Matala pads, but they are a pin in the butt to clean.
I would make a sand and gravel filter. So 3 layers of rock going from 2 to 3 inch rocks, to.5 inch to 1 inch rocks, to a top layer of chicken grit. YOu would also need to drill another hole lower than your weir for a waste port when cleaning. You would also need to build an air manifold under the grates.
This will be the easiest filter to maintain that actually cleans the water really well.