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Fluval U3 Underwater Filter, 150 L (40 US Gal)-

Regular Price: $66.99 | $49.99
Only 1 left

Quantity Available: 1

Fluval® U Series Underwater Filters provide complete and efficient 3-stage filtration, including BIOMAX biological filtering (U2, U3 and U4 models), to create superior aquarium water quality. 

The complete line, consisting of Fluval® U1, U2, U3 and U4 Underwater Filters, includes many practical and versatile features that make them ideal for application in fresh, marine and reptile environments.

Fluval U series filters provide the option of setting the flow output in 3 different positions, a key benchmark in underwater filtration. The Adjustable 3-Way Flow Control feature (U2, U3 and U4 models) lets you position the water flow output to meet your specific needs. The Top Output setting provides maximum circulation and oxygenation, the Integrated Spray Bar setting provides a gentle, even flow for planted aquariums, and the Bottom Output setting is for deepwater agitation. 

Fluval® U Filters also include a convenient flip-top lid that allows quick and easy access to the filter cartridge for maintenance or replacement.

In addition, Fluval® U Filters offer installation versatility: they can be installed vertically against the aquarium wall to create currents or customized flow patterns; or they can be placed horizontally in shallow water tanks or to create decorative features such as waterfalls.

The Fluval® U3 Underwater Filter is ideal for use in fresh, marine or reptile environments. It comes complete with the Adjustable 3-Way Flow Control feature, 2 Foam Pads, 2 Poly/Carbon Cartridges, and BIOMAX Biological Rings

The U3 is suitable for aquariums from 90 to 150 L (24 to 40 U.S. gal.).

Shipping is based on distance and weight of total order.  To get a shipping quote for your order, add the items to your cart and click on "shipping estimator" in your cart. 

Not satisfied with your purchase?  Simply return it to us and we'll offer a full refund.  Shipping and return shipping are not covered.


For product defects within the first 30 days of arrival, please contact Josh's Frogs at 1-800-691-8178. After the first 30 days the product manufacturer (Hagen) provides support, replacement parts, and warranty replacements of products for an entire year. You may contact Hagen's warranty line at 1-800-724-2436.

Fluval U3 Underwater Filter, 150 L (40 US Gal)

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