Fluval U2 Internal Aquarium Filter – Up to 110 Litre Fish Tanks, 400 L/H Adjustable Flow, 3-Stage Filtration with BioMax, Freshwater, Marine & Reptile Use

I recently upgraded to the Fluval U2 Underwater Filter after using the standard filter that came with my Pets at Home LoveFish tank, and the difference is huge. The old filter felt like a gentle trickle in comparison. This one actually moves the water properly and keeps it clean and clear. The Fluval has three flow settings depending on what you need, top, bottom, or full middle. I personally use the top outlet with the nozzle angled towards the surface. This keeps the surface water moving and means I no longer need to run a separate air pump. There’s less tubing in the tank, far less noise, and lower power use overall. I’ve been running it for about a month now with no issues at all. It’s easy to maintain, runs quietly, and feels well made. I’m using it in a 64L tank with shrimp, tetras, and snails, and the flow is just right, strong enough for good circulation but gentle enough for smaller fish and shrimp. I got it for £40.50 it’s great value for what you get, especially compared to the basic filters that come with starter tanks. If you’re still using one of those, this is a solid upgrade that makes a big difference to water clarity and general tank health.

We bought this as the filter we had was not doing a great job water was never crystal clear. Bought the u2 and over night the water was clear. The pictures added to this review are from this weekends water change/aqua scaping. The water got super cloudy due moving the sand about. With in a few hour a noticeable difference. This morning the tank was crystal clear. Out water is dark due to new wood tanens being in the water. But the water its self is beautifully clear. Quiet filter and easy to use. It is quite a big filter. We have ours hidden behind some wood. The three settings for bottom middle or top flow is great to have. Easily removed for filter changes. I cant recommend high enough. You can feel the quality. If you order this get a eu to uk convertor plug as mine came as an eu plug and not a uk one. Wasnt an expensive add. Even that doesn’t take away for how great the filter is

Best in tank filter I’ve had. Bought as original tank filter went down in my 130l , the pros of this filter are - -super quite , hardly any noise -smart looking / blends in / fits nicely -3 different spray modes (top , bottom or middle for gentle flow) So easy to use / setup and for maintenance The water is really really clear with the active carbon in the filter , it comes with ceramic media too which is a bonus Overall really good filter , highly recommend this in tank instead of external canister

As someone who has owned fishtanks (tropical and marine) for most of their adult life, I have tried and tested many types of filters, from the old "undergravel" pump powered systems to the more common external filters. This purchase was to replace an external filter in my 180l tropical setup. I have finally given up on external filters. For their supposed benefits (less clutter in the tank, easier access for servicing etc) I have personally found them unreliable and when they go wrong they really do go wrong (airlock problems and pipe issues) I chose this item due to it being relatively compact, being a brand in the fish world, and its additional water circulation features. The beauty of an internal filter is in the setup - 10 minutes from reading the instructions through to it being operational and with minimal disruption to the fish. The unit looks okay - it is not too intrusive, but it is the water/air circulation which sets it apart from cheaper alternatives. The filter compartments are easy to access for cleaning. It is also very quiet running. Even after a few weeks of it being operational the water flow through the unit is still strong. Overall it is a good unit. The negatives. The actual filter media is very bespoke to the Unit. Personally I have always preferred being able to substitute manufacturers expensive filter media with cheaper options, the compact nature of this unit makes that difficult - so that is of course an additional expense in running this filter. But for a beginner, or indeed someone like me who has had enough of external filters leaking or not operating correctly, this provides a simple alternative at a decent price.

Box damaged and came with an European plug. Not suitable for purpose. Sent it back.

Great stuff

This is about the 3rd or 4th I've bought from Fluval. They're the company I trust for a reliable yet quiet filter. Bob my goldfish loves a nice clean tank as you can tell! Not cheap but deffo worth the money. Fabulous sellers got this to me with same day delivery as my old one packed up. Thank you for a great service all round xx

THIS IS A GREAT SIMPLE TO USE FILTER THAT SEEMS TO DO THE JOB WELL

Ne ho provato davvero tanti e vi posso assicurare che sulla fluval vi potete definitivamente fermare. Per un acquario ci vuole quello👆. Il resto si, avvicina soltato e basta. Questo é l'aspetto positivo della fluval, un acquario per creare il giusto abitat per i pesci, serve quello. I filtri poi sono semplici da estrarre e pulire. È completo di tutto quello che awrve per far stare bene i pesci. L'aspetto negativo di fluval è che la pompa va sempre tenuta sotto controllo, si blocca prima o poi accade. In un anno soltanto può succedere e li avete bisogno anche del peggior articolo tenuto sempre da parte di scorta perché tanto accade sempre di domenica o pwr lw feste quando tutti sono chiusi. Fin quando funziona, bene, per i pesci é come farli vivere tutti i giorni in una Spa. ... Con quello che costa forse un po' più di accortezza la fluval poteva o potrebbe dedicarci a pro dei clienti che ancora ci credono. Ah dimenticavo?! Della fluval li ho provato tutti, in quanto ho avuto anche acquari da 300 litri. Questo è quello più piccolo da 60 litri Ma sì ancora li consiglio tutti i filtri loro.

__________________________________________________________________________ UPDATED 7/26/12-- see bottom part of entry-- upgrade from 3 to 5 stars __________________________________________________________________________ Original review June 2012: I'm writing a long review because I found it helpful to hear others' experience specifically with turtles. They are a little different than fish when it comes to what works. I have a painted turtle, about 5-6 inches long right now. We have an algae eater too who helps keep the tank clean (we call it a sucker fish, not sure what its real name is). We also periodically add small minnows and goldfish to entertain the turtle and for food if we forget to feed her or go on vacation. Since she's primarily a water turtle, her tank consists of mostly water with a few haul out spots. We just upgraded from a 20G tank to this one. Previously we've always used the Whisper Quiet filters with great success. People would rave about how clean the turtle tank was, and we could pretty much ignore it (don't worry about changing water, etc.) In the 20G tank we had the 20-40G Whisper Quiet in about 16G of water, no plants, a few submerged items, and a floating plastic "log" for basking. For the 50G, we added a few more submerged and surface items, but all are plastic or rocks, nothing living. Upgrading to the 50G tank (with about 40-42G water) posed a problem for me. All of the larger hang on back filters required the water level to be higher than I wanted, since the turtle needs some land, and I didn't want it climbing out. I tried rigging a few up-- the larger Tetra one worked very well, but I had to rig it inside of the tank, and it just took up too much room. I decided to try the underwater Fluval for two reasons-- never need to worry about water level, and because I'm not willing to invest in a canister filter. PROS: --silence. it's golden --ease of changing filter media (it's really simple, you can lift it up so you don't contaminate everything or spit junk back out) --will never dry out or burn out if you lose power and it restarts (since submerged) --ability to place where I like in the tank for optimal filtering and flow to stir things up --ability to change parts of filter at a time to preserve beneficial bacteria --foam pad separate from other pieces so you can rinse that and not everything --no splashing, so no hard water stains on side of tank CONS: --I want to love this filter and I hope it works long term. We used it in a tank that had been recently filled and set up, with the Tetra running for about a week. Initially this worked really well, but about a week into it, the water turned nasty green. First off, TURTLES ARE DIRTY. By nature I don't think this filter accomodates that. I'm holding off judgement since it sometimes takes a while to get things right when you set up a new tank, as it happened before with other filters too at times. However, in this case, I think it's because of a lack of active carbon in the filter. There is just a tiny bit there, and in my experience (6 years with this turtle), the active carbon is ESSENTIAL to keeping them from getting stinky and gross. I decided to remove the bio pellets from the middle part (step 3) since I never had them before in my tanks anyway, and instead fill that space with one of the tetra filters filled with activated carbon. It's been about 10 hours. The nastiness is gone and the tank looks much better. There still seem to be a lot of particles in the water, but I am continuing to work on that-- not sure if I can blame it on the filter at this time. I will keep adjusting, because I think this filter is worth figuring out how to make it work for turtles. I gave it three stars because it advertises that it can be used for my purpose, but I don't think it comes through with the media it uses. I also think their media replacements are expensive relative to other filters (which is especially frustrating when they aren't even working for me). However, if the makeshift adjustment of using other carbon filters inside the third chamber is effective, I would upgrade to 4 stars. If I get to perfectly crystal clear water without the need to pay attention to the tank every week (yes, it's possible with some cheap filters), I'd go to 5 stars. I ask a lot from my filters! ___________________________________________ UPDATE 7/26/12 This definitely deserved the upgrade to five stars. I had to leave for three weeks after adding the Tetra carbon filter to the center in place of the bio pellets, so I filled it with a bunch of minnows for her to eat over time, then came home to a tank that was still crystal clear after 24 days. (Trust me, I was almost afraid to look at the tank when I returned for fear of how gross it might be.) A few minnows were still swimming around happily too. I went ahead and swapped out the carbon filter, but it looks like I can simply wash out the outer sponge and pathetic carbon insert supplied with it periodically and replace the Tetra carbon insert in the center chamber monthly. I still don't like that I had to adjust it, but I don't think there's a great product out there for turtles, and this is working VERY well. Plus, I am now purchasing the cheaper Tetra filters, so my ongoing costs will be less. If you go this route, it does seem like a very tight fit to fold over the Tetra filter and slip it in the middle chamber, so don't be shy. Just wiggle it as you push it in and be gentle. All that remains to be seen is longevity, but for now I am one happy consumer!

Ich selbst habe jetzt schon den zweiten Fluval U2 für mein 60 lt. Aquarium in Gebrauch und finde ihn wirklich gut. Er filtert das Wasser schön sauber und meinen Fischen geht es gut. Der Filter ist unschlagbar leicht zu reinigen: Einfach nach vorne klappen, Deckel öffnen und die drei Filterpatronen entnehmen. Unter lauwarmen Wasser oder im abgesaugten Aquarienwasser ausspülen, wieder einsetzen, fertig. Einfacher und bequemer geht's nicht. :-) Ich selbst reinige auch alle 1-2 Monate den Antriebsmagneten. Auch das ist sehr einfach: Boden abziehen, Antriebsmagnet entnehmen, säubern, Halterung von Mulm befreien, fertig. Bei diesem Filter müssen keine Schläuche oder ähnliches aufwenig durchspült und gereinigt werden, der Filter ist in 10 min. gesäubert. Ich hatte den ersten Filter knapp 2,5 Jahre in Gebrauch. Erst im letzten Vierteljahr fing der Motor etwas zu schwächeln an: Er schaffte es nicht mehr, Luft für die zusätzliche Belüftung des Beckens anzusaugen, die Filterwirkung war jedoch immer noch ausreichend. Trotzdem kaufte ich jetzt einen neuen Filter, um evtl. Problemen während der Urlaubszeit vorzubeugen. Den alten Filter habe ich als Ersatzfilter behalten. Die Filterpatronen mußte ich bisher nie austauschen. Wenn man sie regelmäßig ausspült, funktionieren sie einwandfrei. Lt. Fluval folgende Fiilterwartung empfohlen: "Filterpatronenaustausch alle 3-6 mon., Antriebsmagnet jährlich tauschen. Filterreinigung: Einmal pro Jahr". Nun ja... Klar, nach 3-6 mon. ist der Schaumstoff der Patronen komplett dicht. ;-) Wenn ich jedoch den Filter einmal pro Monat säubere und die Filterpatronen beim regelmäßigen 2-3-wöchigem Wasserwechsel ausspüle (!!!), ebenso den Antriebsmagneten reinige, dann kann ich mir das Geld für den empfohlenen Ausstausch sparen. ;-) Auch habe ich so meine Zweifel, das der Antriebsmagnet 1 Jahr (!!!) ohne mal gereinigt zu werden durchhält. Klar, daß der Motor dann auch schneller kaputtgeht... Ich gehe davon aus, daß der Filter bei guter Pflege wieder seine 2-3 Jahre problemlos seine Arbeit verrichtet. Und dann werde ich mir auch den 3. Fluval U2 kaufen.

Ottimo prodotto. Lavora molto bene e finalmente hanno pensato anche alla comodità della pulizia. Avendo un acquario da 150lt che si erge molto in altezza essendo cubico, non era comodo x me smontare sempre dei filtri. Questo,si apre coperchio superiore e si sfilano delle strisce contenenti il materiale filtrante: perfetto! Poi la potenza,spettacolo: la si può modificare a piacimento e avendo axolotl non posso tenerlo alla massima potenza perche viene disturbato ma il filtro pulisce bene e velocemente la vasca nonostante l'ho depotenziato. Io mi sento di consigliarlo

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