Professional Results Instantly The Ultima II is specifically engineered to meet the environmental demands of aquatic life. Our patented Ultima filter does the work of two, combining biological and mechanical filtration into one compact package. The internal components are designed to accommodate high flow and heavy solids that occur naturally when aquatic life is present. The patented cyclonic action is generated by jets activated during the backwash cycle. This action blasts the media apart, then lifts and spins it, separating the waste and flushing it away. Easy Setup And Assembly No Blower Needed Just Minutes To Backwash Internal Jets Do The Work For You Unique Patented Media Design Does Not Channel or Clump Together In Stock-Ships Fast Filter Features Filter Specifications Application: Bio Filter Inlet/Outlet: 2 Max Flow Rate 15000 GPH Barb Connection: 3/4 Pond Size 30000 Gallons Dimensions: 47 x 36 Level High Max Pressure 38 PSI Color: Black Warranty: 5 Year