Danner 05445 CPF2000U Compact Pond Pressure Filter Up To 2000Gal Large capacity housing with reusable biological and mechanical filtering material helps maintain a healthy aquatic environment Reusable foam filter and Biological media Maximum efficiency and minimum power consumption Ideal for small to medium water gardens, barrel and container ponds, can be used as a trickle filter for small waterfalls Included UV clarifier helps to clear pond water, designed to work with most pond pumps