Excellent filtration and water flow from the Aquarium Co-Op Coarse Sponge Filters which include the Easy Flow kit: https://www.aquariumcoop.com/products/aquarium-co-op-coarse-sponge-filter   Already have an Aquarium Co-Op Coarse Sponge Filter?  Pick up the Easy Flow Upgrade Kit now: https://www.aquariumcoop.com/products/easy-flow-sponge-filter-upgrade-kit   Follow Ethan and Fish Mania on Facebook: https://www.facebook.com/fishmaniachatt   Chattanooga Area Aquatics Society: https://www.facebook.com/groups/659444601653148