Zoo Med Palludarium - Filters up to 20 Gallons of Water. Low-profile corner filter keeps your Paludarium water feature clean and clear. Easy open door to clean filter cartridges without removing the main filter from water. Spray bar included. Fully submersible low-profile filter. Adjustable dial to control flow rate. Provides sufficient filtration for Paludarium water features with up to 10 Gallons (PF-10) or 20 gallons (PF-11) of water. Can be mounted horizontally for lower profile tanks or vertically in the corner. Outflow arm can be rotated 90?. Extra long 9.8? (3 m) cord.