VAS Aqua Ultraviolet AU50004 Ultima Ii Filter 4 000 With 2" Valve P6692281VAS-AU50004 https://cdnimages.opentip.com/full/VAS/VAS-AU50004.jpg Aqua Ultraviolet AU50004 Ultima Ii Filter 4 000 With 2" Valve This Ultima II Filter is a great choice for Koi ponds up to 4,000 gallons. This filter is specifically engineered to meet the environmental demands of fish ponds. The lightweight media is designed for very high flow rates. The tubular bio-media has low head loss and a very high biofilm surface. The \"Y\" shape on the inside and wings on the outside afford a protective surface under backwashing, and with our patented backwash system will keep the media from clogging. The same properties have been added to this media in three different sizes with random lengths and diameters to avoid stacking. The Ultima II tubular bio-media offers the highest surface area for growth of beneficial bacteria. No other backwashable pressurized filter compares. Cleaning the filter is done by internal jets. The Ultima II is also the ideal filter for aquariums where very high flow rates are desired. Features:Dimensions (Diameter x Height): 20.5\" x 35\"Pond Size: up to 4000 galRecommend pump flow rate: 4,000 gph (at 10 ft. of head pressure)2\" Inlet/OutletsMax pressue: 38 psiTop Valve MountIncludes media. Lightweight media is designed for very high flow rates.Low head lossVery high biofilm surfaceNOTE: This item is drop-shipped directly from the manufacturer 6692281 617750500041 270.0700lbs 0.00 0.00 0.00

Aqua Ultraviolet

1871.9500 2025-05-09 In Stock Aqua Ultraviolet AU50004 Ultima Ii Filter 4 000 With 2" Valve

customer review - by Michael Lyu, December 12, 2020

5/ 5stars

I use it on a 720 gallon fish tank, it is the best filter I have ever used, cleans out fish waste super fast, maintenance is super easy, all you need to do is backwash the filter when you do water change. It works better when you use a pump with higher hp.

Aqua Ultraviolet AU50004 Ultima Ii Filter, 4,000, With 2" Valve

Rating 5 | 1 reviews

Brand Aqua Ultraviolet

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Product Description

This Ultima II Filter is a great choice for Koi ponds up to 4,000 gallons. This filter is specifically engineered to meet the environmental demands of fish ponds. The lightweight media is designed for very high flow rates. The tubular bio-media has low head loss and a very high biofilm surface. The "Y" shape on the inside and wings on the outside afford a protective surface under backwashing, and with our patented backwash system will keep the media from clogging. The same properties have been added to this media in three different sizes with random lengths and diameters to avoid stacking. The Ultima II tubular bio-media offers the highest surface area for growth of beneficial bacteria. No other backwashable pressurized filter compares. Cleaning the filter is done by internal jets. The Ultima II is also the ideal filter for aquariums where very high flow rates are desired.

Features:

Dimensions (Diameter x Height): 20.5" x 35"
Pond Size: up to 4000 gal
Recommend pump flow rate: 4,000 gph (at 10 ft. of head pressure)
2" Inlet/Outlets
Max pressue: 38 psi
Top Valve Mount
Includes media. Lightweight media is designed for very high flow rates.
Low head loss
Very high biofilm surface
NOTE: This item is drop-shipped directly from the manufacturer

NOTE: only ship to a commercial address / only ship to aquatics businesses

This item is oversize. we may contact you when we process the order.

Attention CA Residents: Prop 65 Warning

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.