Aqua UltraViolet Ultima II Bio-Mechanical Aqua FIlter

Aqua Ultraviolet SKU: A50079

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Ultima II Aqua Filter - Designed for extreme loads and elevated rates.  The patent cyclonic backwash system does the dirty work for you.

  • Simply set the valve to backwash and rinse
  • Internal jets do all the work for you
  • Never get your hands dirty
  • Bio-media is included

When the bacteria are given the proper environment, they grow in a thin biofilm on the surface of each piece of media. The larger the surface area, the larger the bacterial colony. Our media surpasses the competition in this area with four to seven times the surface area of any other media available.

Biological and mechanical filtration are essential to every pond. The bacterial bed that builds on filter media will nitrify any ammonia in your pond making it a healthier environment for your aquatic life. Mechanical filtration picks up any debris in the pond, keeping your pond healthier and your fish happier.


Simply by rotating the valve handle the patented cyclonic backwash system does the dirty work for you. In just minutes the internal jets clean the filter for you. Ultima II Filters are designed for high flow rates, extreme fish loads, and elevated feed rates.


  • Highest area for growth of beneficial bacteria
  • Unique patented tubular design
  • Prevents clumping and channeling
  • Protects bacteria while dislodging unwanted debris
  • Pre-seeded with bacteria to start colonization quickly
Model Description Max Flow Pond Size Inlet/Outlet Dimensions
A50073 Ultima II 1000 1,200 GPH 500 - 1,000 Gallons 1-1/2" 14" Diameter x 23-1/4"H
A50079 Ultima II 1000 1,200 GPH 500 - 1,000 Gallons 2" 14" Diameter x 23-1/4"H
A50019 Ultima II 2000 2,500 GPH 1,000 - 2,000 Gallons 1-1/2" 16 -1/2" Diameter x 33"H
A50017 Ultima II 2000 2,500 GPH 1,000 - 2,000 Gallons 2" 16 -1/2" Diameter x 33"H
A50003 Ultima II 4000 4,500 GPH 2,000 - 4,000 Gallons 1-1/2" 20 -1/2" Diameter x 38"H
A50004 Ultima II 4000 4,500 GPH 2,000 - 4,000 Gallons 2" 20 -1/2" Diameter x 38"H
* A50007 Ultima II 6000 7,500 GPH 4,000 - 6,000 Gallons 2" 22 -1/2" Diameter x 42-3/4"H
* A50011 Ultima II 10000 7,500 GPH 6,000 - 10,000 Gallons 2" 22 -1/2" Diameter x 42-3/4"H
* A50119 Ultima II 20000 7,500 GPH 10,000 - 20,000 Gallons 2" 30 -1/2" Diameter x 48"H
* A50300 Ultima II 30000 7,500 GPH 20,000 - 30,000 Gallons 2" 35 -1/2" Diameter x 53"H
* A50301 Ultima II 30000 -SM 20,400 GPH 20,000 - 30,000 Gallons 3" 30 -1/2" Diameter x 39 -3/4"H
* A50600 Ultima II 60000-SM 20,400 GPH 30,000 - 60,000 Gallons 3" 36 -1/2" Diameter x 45 -1/2"H
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Note: Use Appropriate Pump For Filter Size (If you purchase a 4000 Gallon Filter, use a pump that will give you 4000 GPH at your Total Dynamic Head (10’ of pressure head plus vertical head height plus friction head (length and inside diameter size of hose with fittings such as elbows) for the best backwash. In addition, the Ultima II Filters should not be used with pipe dope inline as it will break down the valve of the Ultima Filter and will not be covered under warranty. Teflon tape is recommended.


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