Pond filters with filter mats and bio media provide mechanical and biological filtration. This helps create a healthy balance of beneficial bacteria in your pond water.
Biological waterfall pond filter kits with biological media inside work by having the pump push water into the bottom of the bio filter. Then as the pond water rises to the top of the box it goes through filter mats and bio-media. Finally, the water then spills over the waterfall boxes weir and travels down back to the pond.
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