Fluval U1 Underwater Filter

This product is very good for aquarium. Specially it did not create sound and also filter the water very well.

good

The filter is very old and has good amount of dust on it. The package says year of import is 2016. However there are no signs of any prior usage but the parts are fitted together and not separate as mentioned in the user guide.That means at least it was assembled before delivery.So much for Amazon fulfillment.Coming to the filter itself, the air flow is almost absent but water is flowing at decent rate. The flow adjustment knob isn’t making any visible changes to the flow. So not sure if that is working.However the filter is quite the silent and I don’t notice it at all.I don’t think i will be getting any warranty on this one.

Functions hopeless.the item is totally not worth for money, returning it.

I added the U1 to my 20 gallon tank that already had a 20 gallon filter. I wanted some flow, and extra filtration since I have a few more fish than I should.The sponge covers all inlets, so my Kuhli Loaches and shrimp aren't at risk of being sucked in, which is extremely nice. Any other filter or pump I've used required me to superglue sponges or screens to the inlets. I also love that the sponge is easily removeable via the lid, so I can pull it out and clean it without moving the filter. It also has a removeable piece in the center that I removed and replaced with a media bag full of Zeolite and Carbon blend with some compressed peat for acidity.Mounting the filter was the only downside I had with it, but because of the easily removeable sponge I'm not knocking off a star for it. The U2 and higher models have a bracket, the U1 just has 3 easily removeable suction cups (not a good thing) so once you stick it on the glass, if you even try to move it the tiniest bit to position it just right the suction cups disconnect from the unit and stay stuck on the glass, forcing you to pry them off, pull out the filter, reattach the suction cups, then reposition it again. That said, it stays put, its fairly small, and looks nice.For a filter that attaches to nothing but the wall, it's very quiet. Much more so than the two cheaper units I used. Obviously a HOB will be quieter since it isn't attached to the entire tank turning your tank into a giant vibrating subwoofer, but for something that DOES transmit all of its vibrations straight into the tank its very quiet. My Marina HOB is quieter and the U1 does make a very faint grinding noise, but I can only hear it right next to the tank and 5 feet away it is inaudible.Filtration is great as well. I use it as a second filter, since my HOB is stuffed full of loads of different media so the flow rate is lower, so this serves primarily as a bio-filter to reduce ammonia. For that purpose it does fantastic, and the small media bag in the middle for some extra filtration is nice too. The flow is the best part here though, it keeps my substrate crystal clean and any gunk that gets kicked up by the loaches or cories immediately gets swept into the current and sucked up by the filters. If you're using this as your only filter, definitely add some zeolite and carbon to the middle of it.All said, it's a fantastic filter and I honestly wish I just had one U2 for my 20gal rather than two separate filters.

Manque les filtres. A acheter séparément mais ce n'est pas indiqué ici. Dommage. Retour et remboursement.

I really like it. It works well for my 30l aquarium and I prefer this one rather than Stingray, that I had before. It is easier to clean, less chances for fish to be trapped and there is a space for bacterial substrate. And it is silent. The only downside is that you cannot change sponge without detouching the filter from the wall. I hoped it will be as easy as with Fluval U2. But it's very minor problem.

Sicuramente non ci si aspetta un mega filtro ma ci si accontenta, per me personalmente non è un buon articolo.Non mi piace, la spugna lascia passare l'acqua senza essere filtrata, piccolo e poco potente, andrebbe bene per un 10 litri

Purchased of Amazon Australia and plug was European plug. It’s not the type of filter that I thought it was.