Signature Biofalls filter creates a perfect base for building beautiful, leak-free waterfalls in your pond. Signature Series Biofalls filter requires only once a year cleaning when used in combination with a skimmer pre-filter. A non-clogging swirl chamber allows even distribution of water aiding filtration and increasing waterfall width. A aquascape biofalls filter can be sunk into the ground for a stream effect or raised to create a greater water drop. The large volume capacity makes the biofall filter one of the largest biological filters on the market today (holds more bacteria which means cleaner ponds). A built-in rock ledge allows this unit to blend in with the rocks making it look natural. Remove the check valve at the pump and the discharge acts as bottom drain to empty the biofalls pond filter. Each Biofalls filter comes with: 2 Filter mats Filter mat support rack Mesh bags for bio balls (bio balls not included) These are great for adding another waterfall and stream to your current Aquascape Pond. Micro series biofalls filter Signature Series 2500 Biofalls Filter ponddepot@msn.com Copyright - All World Rights Reserved Pond pumps, Pond Kits and Pondless Waterfall kits, Underwater Pond Lights. Aquaclearer Extreme bacteria and String Algae Buster and pond fish food. Pond Depot provides Do-it-yourself pond kits and Pondless waterfall kits delivered right to your home at great prices! Thank you for shopping at Pond Depot you online pond superstore!