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Fluval U3 Internal Underwater Aquarium Filter

Quick Overview

The new range of Fluval U series underwater filters replace the plus range.These clever filters feature more filtration capacity and are more adaptable and are easier to use and clean than the existing plus range.
£46.49
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£46.49

Details

The new range of Fluval U series underwater filters replace the plus range.These clever filters feature more filtration capacity and are more adaptable and are easier to use and clean than the existing plus range.

All filters feature 'flip-top' access for quick and easy cartridge replacement.

The U2-U4 models feature three-stage filtration for superior aquarium water quality and three way flow control with integrated spray bar for versatile water circulation. 

Features:-

For aquariums from 90 L to 150 L (24 to 40 U.S. Gal.)

Three way flow control with adjustable output

2 foam pads, 2 poly/carbon cartridges & 40 g Bio-Max

1 Venturi

2 Output diverters

Additional Information

Inner Hose Diameter No
Cable Length (m) No
Barcode 0015561104753
Filter Includes Heater No
MPN A475
Wattage 6w
Marine Safe Yes
Warranty Period 3 Years
Brand Fluval
Dimensions (L x W x H) 8 x 10.5 x 28cm
Filter Height Including Taps N/A
Flow Rate (lph) 600
Media Capacity N/A

Customer Reviews

Items 1 to 10 of 15 total

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Great Product Review by Donna
Quality
Value
Price
Satisfaction
Easy instructions to put together before you pop it in the tank and really the Filter does the rest because you can set it to the flow you require it is not complicated very pleased with this excellent product. (Posted on 07/06/2016)
Sound, no problems an easy transaction. Will use again. Review by Anthony Higgins
Quality
Value
Price
Excellent piece of kit. (Posted on 20/09/2015)
I have emailed you twice I did it on the contact form.dont understand why you haven t received them anyway .i just want a refund it is not working and has killed my marine fish .can you get in touch by email as my phone as a problem with it .i will give y Review by Sheryll Amos
Quality
Value
Price
I have emailed you twice I did it on the contact form.dont understand why you haven t received them anyway .i just want a refund it is not working and has killed my marine fish .can you get in touch by email as my phone as a problem with it .i will give you any details or anything else what you require (Posted on 07/03/2015)
Review by Sheryll Amos
Quality
Value
Price
I've emailed you twice about this filter as it doesn't work (Posted on 07/02/2015)
Effective filter which immediately improved my tan Review by fishnovice
Satisfaction
Quality
Value
Price
I have just replaced an old filter with this Fluval U3 for my 90L tank having lost lots of fish over recent weeks and struggling with water quality. It is early days but since replacing it, the water quality has improved and it looks much clearer. It was a little noisy to begin with but soon quietened down. Opening the various compartments to prepare it was a bit stiff to begin with (and the instructions not very clear for this) and I was worried I'd break it but it seems fairly sturdy and I'm sure it'll become more supple with use. The replacements also seem good value. (Posted on 02/03/2013)
FAB Review by tom
Value
Price
Satisfaction
Quality
this is one of many filters I have purchased over 18 years of keeping and breeding tropical fish, in summary, the best I have ever known, does exactly what is required and keeps water crystal clear, filters are reasonably priced and easy to purchase from many stockists, I would really recommend this product, one negative and one which I am trying to solve at present is the bracket which holds the filter to the tank wall, mine is broken and I cant seem to find a replacement, this however is after many years of use so dont be put off, if I have to I will happily purchase another filter unit, well worth it. (Posted on 07/02/2013)
Best Value Product Review by Billpaz.
Value
Price
Satisfaction
Quality
The Fluval U3 internal filter came as part of the package when I bought my Fluval Roma 125 Aquarium. An exceptional product for its price,having had this running for around 3 years now, it has proven extremely reliable and easily maintainable,having just decided to upgrade to the U4 I have also ordered spares for my U3 as I will continue to use it in another of my Tanks,the easy availability of all the spares as well as its life expectancy and reliability makes this Brand second to non for Me.
(Posted on 06/01/2013)
Best internal filter! Review by Stephen
Price
Satisfaction
Quality
Value
These Fluval filters are just simply the best on the market. You couldn't buy better for this fantastic price! And dont worry about noise; my fish make more noise than this filter! Would always recommend. (Posted on 03/12/2012)
great filter Review by david
Price
Satisfaction
Quality
Value
after months of research i decided that this filter would be my best option without braking the bank or delving into the unknown of external filtration. my water is always clear and free of debris and the media change is a doddle, pull the filter forward (it tilts) open the top and pull each cartridge out and change, simples. the other clever thing is the flow of water, it has three settings so i can have the flow coming out the top to make the water ripple, one long multi directional bar in the middle which is gental for planted aquariums and one for the middle to bottom which i use for circulation. efficent, easy and it seems very durable. great product (Posted on 21/11/2012)
good but.. Review by Dimitrios
Price
Satisfaction
Quality
Value
A good filter overall, probably the best internal after the aquaball series.
This filter is amazing at doing its job, but.... it is a very bulky piece of equipment and the media compartment is intentionally not ergonomic. I say intentionally because Fluval wants us to buy their pricy filter media kits, when all this space could have been used better with after market media.
Concluding, if you don't mind the bulkiness and you can live with the media problems, this is a very efficient filter that will manage to biologically and mechanically maintain a tank of 100-120L easily. (Posted on 19/11/2012)

Items 1 to 10 of 15 total

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Orders over £25 are Delivered FREE!

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Bulk items requiring Pallet delivery are different...

Certain items, such as glass aquariums & large cabinets, require special handling and must be sent out on a pallet, this is at a cost of £19.99 on some pallet deliveries depending on location. We don't offer free pallet delivery unfortunately (unless stated) due to the delicate nature of the glass aquariums and insurance required to transport.


We will contact any pallet delivery purchase before dispatch to arrange a suitable delivery date for you to receive the goods. We will not dispatch a aquarium pallet delivery until we have booked a delivery date with you the customer.

Note that the pallet delivery service is a drop at kerb only service, the drivers are not insured to handle goods into homes and you are required to dispose of the pallet.

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