Best Seller | Internal Nano Corner Filter, 110 Volts, .67 LB Keep your aquarium water crystal clear with the Dennerle Internal Corner Filter. Fitler utilizes a fine filter media cartridge that traps large and small detritus keeping your aquarium water prestine. Small in size allowing you to have plenty of room... ... more Internal Nano Corner Filter, 110 Volts, .67 LB Keep your aquarium water crystal clear with the Dennerle Internal Corner Filter. Fitler utilizes a fine filter media cartridge that traps large and small detritus keeping your aquarium water prestine. Small in size allowing you to have plenty of room... Petco.com | | $21.45 go to store |