Currently have a 10gallon but will upgrade shortly to a 30ish for a yellow eared turtle. Does this sit on the bottom where it could suck in the food and waste that collects on the bottom where my river rocks are? It has proven hard to get that out and the pleccu is not cleaning it up as of now.

Mine is laying on the bottom of my tank and i have never had it sitting upright. I can tell you it does pretty well sucking everything up. However, i usually have one spot in the tank, right underneath the filter where debris sits. When I need to water change I just make sure I get the debris out with a fish net. That seems to work pretty well. It is the best filter I have had so far (with a turtle that has killed 4 filters), just make sure to clean the motor fan with every water change or filter media change.

Does the U4 filter have space to add activated carbon pellets?

Yes it can, in the center of the filter there a removeable plastic cage. I put a small Chemi Pure bag in it. But I didn't care for this filter and not cause it didn't work. But I was wanting something more as a skimmer type filter and I wasn't getting enough flow out this filter unit. But it did work, if your running this on a smaller tank say no 30 gal freshwater ok. I was running it on a 29 gal reef tank with lots of live rock and it couldn't push enough water around it. But it did filter the water good.

Do all 3 outputs work at the same time?

No, you have to pick a setting. I use mine for moving water in the bottom of my tank. It also seems to be he strongest setting out of the 3 choices

Can I change the direction of the water coming out of the nozzles? For example directing it upwards instead of horizontal.

There's a small directional piece on the end of each nozzle you can turn to minimally direct the flow - but not nearly that much.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fluval U3 Underwater Filter

Product ID: 2333775

Details

Brand
Fluval
Color
Black
Included Components
Filter
Item Weight
16 ounces
Material
Electronic
Product Dimensions
12"L x 6"W x

🌀3-stage filtration system

🔄Flip-top cartridge access

⚙️3-way customizable flow control

AR$313202

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

Secure transaction

Description

🧜‍♂️ Elevate your aquarium game with Fluval U3 — where innovation meets effortless aquatic perfection!

FLOW YOUR WAY - Three-way flow control lets you customize water currents—horizontal for waterfalls or vertical for dynamic circulation.
SLEEK FUNCTIONAL - Modern, ergonomic design with easy-grip water control panel blends seamlessly into any aquatic setup.
TRIPLE STAGE PURITY - Advanced 3-stage filtration traps debris, clarifies water, and boosts biological efficiency for crystal-clear tanks.
EFFORTLESS MAINTENANCE - Flip-top lid design means quick, no-fuss cartridge changes—keep your aquarium pristine without the hassle.
VERSATILE COMPATIBILITY - Perfectly engineered for freshwater, saltwater, and reptile tanks up to 40 gallons—one filter, endless possibilities.

The Fluval U3 Underwater Filter offers a powerful 3-stage filtration system with BioMax media, designed for aquariums and reptile tanks up to 40 gallons. Featuring a sleek design, customizable 3-way flow control, and a convenient flip-top lid for easy cartridge replacement, it supports freshwater, saltwater, and terrarium environments. Backed by a 3-year warranty, the U3 combines cutting-edge technology with user-friendly maintenance to keep your aquatic ecosystem thriving.

Specifications

ASIN	B001TKZ51E
Best Sellers Rank	#15,818 in Pet Supplies ( See Top 100 in Pet Supplies ) #107 in Aquarium Filters #112 in Aquarium Filter Accessories
Brand Name	Fluval
Color	Black
Customer Reviews	4.0 4.0 out of 5 stars (2,156)
Global Trade Identification Number	00015561104753
Included Components	Filter
Item Dimensions L x W x H	12"L x 6"W x 5"H
Item Highlight	Designed for Freshwater and Saltwater Aquariums, Also Ideal for Terrariums and Turtle Tanks
Item Type Name	HAGEN FLUVAL U3 UNDERWATER FILTER
Item Weight	16 ounces
Manufacturer	Rolf C. Hagen (USA) Corp.
Manufacturer Part Number	A475A1
Material Type	Electronic Components, Plastic
Model Number	A475A1
Number of Items	1
Number of Packs	1
Pet Type	Fish, Reptile
Product Style	Underwater Filter
Specific Uses For Product	Indoor
Tank Volume	40 gallons
UPC	015561104753
Unit Count	1 Count
Vivarium Type	Aquarium
Warranty Description	3 years; Fluval U Series Power Filters are guaranteed against defects in material or workmanship under normal aquarium usage and service for 3 years. We offer a 3 year guarantee on all nonreplaceable parts which means that the filter will be repaired or replaced at the manufacturer's discretion, free of charge, when the complete pump is returned with proof of purchase and postage paid. This warran…

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

AR$313202

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews