Hagen Laguna PowerFlo External Biological Filter 4500 is ideal for larger ponds up to 1000 US gallons or 4500 L. Flow rate is 500-1000 gph.? The external pond filter features an efficient 3-tiered filtering system that provides complete mechanical and biological filtration.
Dimensions: 20 1/2" x 15" x 13"
Ponds up to 1,000 Gallons
Flow rate 500 - 1,000 GPH
The top tray houses pumice filter material (included) which provides mechanical and biological filtration. Below the top tray, a foam pad (also included) performs mechanical filtration. The bottom tray is designed to hold the biological media of your choice, such as Laguna BioMax(not included). The trays have convenient handles which allow you to remove them easily.