Does the whole unit go under water? No spray bar to make a noise? All the aeration underwater bubbles? My filter at the moment very noisy!

its very quiet, just a small hum if you get near it. It has 3 settings, one makes bubbles, the other ones are silent, you dont have to have the bubbles if the unit is under water, mine is just above the surface, i dont like to trail the wire in the water but some people do and the unit can sit in the bottom of the tank, it is large but a few plants will cover it, hope this helps

Hi does the filer come ready to use or do I have to buy the filters and foam seperately?

Hi Leigh.It comes with the filters and biomax filter media :-) I get my refills from Amazon seller The Aquahut for £11.59 for a 2 pack foam pad, 2 pack cartridge pack and 170g box of biomax. Good value and very reliable seller. Have used them ever since I purchased my Fluval U2. Happy to help :-)

I have lost the grey stopper that regulate the slow from the top filter. Is it possible to purchase these separately please?

You can use a blob of bluetac and vary the air flow like that.

Will this filter work if I use it horizontally on its side, rather than vertically? I want to use it in my turtle tank which has a low water level

I can’t see it being a problem. How deep is your water though? This is enough filtration for a 110l tank so if you’ve only got a bit of water in the bottom a sponge filter may be a better option?

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💧 Dive into Clarity with FluvalU4!

CUSTOMIZABLE FLOW - Adjustable flow control to suit your aquatic environment.
COMPACT LIGHTWEIGHT - Sleek design at just 1.12 kg, perfect for any space.
EFFORTLESS MAINTENANCE - Top access design for hassle-free upkeep.
VERSATILE FOR ALL FISH - Ideal for medium breeds and all life stages.
TRIPLE FILTRATION POWER - Experience crystal-clear water with 3-stage filtration.

The FluvalU4 Internal Filter is a powerful and efficient filtration system designed for aquarists who demand the best for their fish. With a top access feature for easy maintenance, adjustable flow control, and a robust 3-stage filtration process, this filter ensures a pristine aquatic environment. Compact and lightweight, it fits seamlessly into any indoor setup, making it the perfect choice for medium-sized fish across all life stages.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Pet Type	Fish
Product Dimensions	11.68 x 13.21 x 35.56 cm; 1.12 kg
Item model number	A480A1
Breed Recommendation	Medium
Pet Life Stage	All Life Stages
Item Form	Power
Allergen Information	Nut Free
Material Composition	100% Mixed
Colour	Black
Size	U4
Number of Items	1
Quantity	1
Specific Uses	Indoor
Batteries required	No
Batteries Included	No
Voltage	230 Volts
Item Weight	1.12 kg

FluvalU4 Internal Filter, 240 Litre

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