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.

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U2 Underwater Filter – Designed for Freshwater and Saltwater Aquariums, Also Ideal for Terrariums and Turtle Tanks

Product ID: 257505595

Details

Brand
Fluval
Capacity
110 Liters
Material
Plastic
Product dimensions
25.4L x 10.2W
Special features
Top Access 3

💧400 L/hr max flow

🔄Adjustable flow control

⚙️3-stage filtration system

€ 90.28

Duties & taxes included

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Elevate your aquarium game with Fluval U2 – where clarity meets style!

EFFORTLESS MAINTENANCE - Flip-top lid grants quick access to filter cartridge—no hassle, no downtime
CUSTOMIZABLE FLOW PATTERNS - Position horizontally or vertically to create currents or decorative waterfalls
ADVANCED 3 STAGE FILTRATION - Traps debris, purifies water, and supports healthy aquatic life
POWERFUL 400 L HR FLOW RATE - Ensures crystal-clear water circulation for up to 30 gallons
VERSATILE MULTI ENVIRONMENT USE - Perfect for freshwater, saltwater, terrariums, and turtle tanks

The Fluval U2 Underwater Filter delivers powerful 400 L/hr flow with a 3-stage filtration system, designed for aquariums up to 30 gallons. Its sleek, versatile design allows horizontal or vertical placement to customize water flow, while the flip-top lid ensures easy cartridge access. Ideal for freshwater, saltwater, terrariums, and turtle tanks, it combines efficiency with effortless maintenance backed by a 3-year warranty.

Specifications

ASIN	B001Q1HPGE
Best Sellers Rank	#11,424 in Pet Supplies ( See Top 100 in Pet Supplies ) #558 in Aquarium Accessories
Brand	Fluval
Brand Name	Fluval
Capacity	110 liters
Container Type	Aquarium
Customer Reviews	4.2 out of 5 stars 4,721 Reviews
Global Trade Identification Number	00015561104708
Included Components	Filter
Included components	Filter
Installation Type	Freestanding
Item Dimensions L x W x H	25.4L x 10.2W x 12.7H centimeters
Item Type Name	HAGEN FLUVAL U2 UNDERWATER FILTER
Item Weight	0.64 Kilograms
Manufacturer	Rolf C. Hagen (USA) Corp.
Material	Plastic
Material Type	Plastic
Maximum Flow Rate	400 Liters Per Hour
Model Name	HAGEN FLUVAL U2 UNDERWATER FILTER
Model Number	A470
Number of Items	1
Number of Packs	1
Other Special Features of the Product	Top Access, 3 Stage Filtration, Adjustable flow control
Part Number	HGA470
Power Source	Corded Electric
Product dimensions	25.4L x 10.2W x 12.7H centimeters
Purification Method	3 Stage Filtration, Biomax
Special features	Top Access, 3 Stage Filtration, Adjustable flow control
Supported Water TDS Level Maximum (PPM)	300
UPC	015561104708
Unit Count	1 Count
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…

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TrustScore 4.5 | 7,300+ reviews

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