SKU: 13691876974

Fluval U4 Aquarium Internal Filter 1000L/h for tanks up to 240L

Sale price$66.14 Regular price$73.49
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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Description

Fluval U4 Aquarium Internal Filter 1000L/h for tanks up to 240LFluval U4 Aquarium Internal Filter 1000L h for tanks up to 240L Fluval U4 Underwater Filter provides complete and efficient 3 stage filtration, including BioMax biological filtering, to create superior aquarium water quality. The U4 Filter includes practical and versatile features, making it ideal for application in fresh, marine and reptile environments. The filter provides the option of setting the flow output in 3 different positions, a key

Fluval U4 Aquarium Internal Filter 1000L/h for tanks up to 240L

Fluval U4 Underwater Filter provides complete and efficient 3-stage filtration, including BioMax biological filtering, to create superior aquarium water quality. The U4 Filter includes practical and versatile features, making it ideal for application in fresh, marine and reptile environments.

The filter provides the option of setting the flow output in 3 different positions, a key benchmark in underwater filtration. The adjustable 3-way flow control feature 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.

The filter also has a convenient flip-top lid that allows quick and easy access to the filter cartridge for maintenance or replacement. The filter can be installed vertically against the aquarium wall to create currents or customized flow patterns; it can be placed horizontally in shallow water tanks; or it can be used to create decorative features such as waterfalls.

  • Provides complete and efficient 3-stage filtration
  • For fresh, marine and reptile environments
  • Adjustable 3-way flow control feature lets you position the water flow output
  • Top output setting provides maximum circulation and oxygenation
  • Integrated Spray Bar setting provides a gentle, even flow for planted aquariums
  • Bottom output setting is for deep water agitation
  • Convenient flip-top lid allows quick and easy access for maintenance
  • Can also be placed horizontally in shallow water tanks
  • Can be installed vertically to create currents or customized flow patterns
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 13691876974

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4.3 ★★★★★
Based on 24 reviews
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Debra Hileman
San Leandro, US
★★★★★ 4
Looks good but don’t ever take down.
Size: 4 pcs: 15.7*5.7, Color: White
Be ready for gargantuan holes to be put in your wall.
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Reviewed in the United States on March 29, 2026
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Verified Purchase
Tom Taylor
Waukegan, US
★★★★★ 5
Great purchase
Size: 4 pcs: 15.7*5.7, Color: White
Easy to install. Great quality. Would buy it again.
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Reviewed in the United States on March 20, 2026
D
Verified Purchase
Drago
Cuba, US
★★★★★ 5
Beautiful and very easy to install
Size: 4 pcs: 15.7*5.7, Color: White
They look great and very easy to install, I really recommend this product.
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Reviewed in the United States on May 28, 2026
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Verified Purchase
Jodi Cook
Grantham, US
★★★★★ 3
Just Ok.
Size: 4 pcs: 15.7*5.7, Color: Maple Wood, Size: 4 pcs: 15.7*5.7, Color: Maple Wood
They look nice but they aren’t sturdy and do not hold much weight. I’ve bought better ones on Amazon.
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Reviewed in the United States on January 12, 2026
M
Verified Purchase
Mrs. Buyer
Massapequa, US
★★★★★ 5
Worth
Size: 6 pcs: 15.7*5.7, Color: White
Really good wall amounts. I used the drywall anchors and it feels sturdy. I put like a 3 pound Crystal on it and it’s holding perfectly fine. I also was able to paint them with no problem would buy again.
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Reviewed in the United States on January 13, 2026

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