Which Pressure Filter is Right for Your Pond?
Drs. Foster & Smith Educational Staff

Compare Pressure Filters
Connected to a properly matched pond pump, pressure filters provide outstanding biomechanical filtration, removing particulate matter as well as toxic ammonia and nitrite. Water driven into the filter is cleaned as it passes through various filter media. Many pressure filters also include UV clarification, or the option to add UV.

Pressure filters are ideal stand-alone filters for small to medium koi/fish ponds. They also serve as great auxiliary filtration for larger ponds with a skimmer/waterfall filtration system already in place. Ease of installation makes them an ideal choice for a new or existing pond.

Because pressure filters are self-contained, they can sit on or partially in the ground adjacent to the pond and still efficiently return water to the pond. They also work efficiently above or below the pond water level. When connected to a water fountain, pressure filters return water to your pond with an aerating flourish.

Not sure which pressure filter is for you? Explore the following chart for some helpful insights.

  Fish Mate
UV + Bio
Pond Filters
Filter System
Pressure Filter
Little Giant
Biological Filters
Cobalt Prexo Bio-Pressure Filter
Sizes available 4 3 3 4 2
Maximum pond size (gallons) 9,000 5,000 4,000 3,170 3,100
For pumps with a maximum flow rate of (gph) 3,000 4,000 2,000 1,585 1,600
UV clarification Included Included Optional Yes Optional
Mechanical filtration Sponge pads Plastic Bio-Matrix media offer bio-mechanical filtration Open-profile plastic media offer bio-mechanical filtration Foam bio-mechanical filtration Cobalt Kinshi Sponge
Coarse & Fine Sponge
Biological filtration Ceramic SUPRA bio media Plastic bio-balls Cobalt Bioglobes
Cleaning mechanism Turn PowerClenz knob to flush filter with 1,000 lbs of pressure Rinse and backwash modes, manually operated agitator Back flush cleaning Backwash cleaning system Backwash cleaning system
Bury filter? Yes Yes Yes Yes Yes
Pressure gauge No Yes No N/A N/A
Manufacturer Warranty 3-year 1-year 2-year 3-year 3-year
Additional noteworthy details Larger sizes designed with the koi keeper in mind Virtually maintenance free. Bio media never needs replacing Choose UV models for even cleaner water Cleaning indicator and the revolutionary backwash system No loss in flow rate. Choose UV models for even cleaner water