Seachem Tidal Power Aquarium Filter - 35 Gallon Large Fish Tank Filter,blackBrand: Seachem Color: black Features: FLOW REGULATION: The fully adjustable flow regulation feature on the Tidal Power Filter adjusts performance to a specific aquarium volume, type, or provide an environment for fish that prefer more or less water movement or oxygenation. Adjust the dial from anywhere between 450 gallons per hour down to a gentle 90 gallons per hour. SURFACE SKIMMER: The surface skimmer on the Tidal Power Filter will capture the