AQUATOP Forza Polishing Micron Filter 500 GPH Dual-Stage Clarity for Large Aquariums, PM-500For larger aquariums, the Aquatop PM 500 Forza Polishing Micron Filter delivers superior water clarity with a dual stage filtration system. Ideal for tanks up to 120 gallons, this filter processes up to 500 gallons of water per hour, efficiently removing cloudiness, odors, and discoloration. Each of the two micron cartridges is infused with carbon for effective removal of harmful compounds, leaving your water sparkling clean. With no priming required