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Your cart is empty.4.1 out of 5 stars
Product Description
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What if my filter stops working?
Check if the impeller is clogged.
1. Use tweezers to gently remove the impeller;
2. Rinse the impeller;
3. Clean the impeller chamber;
4. Gently put the impeller back into place. Then try gently rotating the impeller by hand to make sure the impeller is free to rotate and prime the filter.
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Did You Know?
- Fill filter with water before plugging in. (The pump must not run dry.)
- The minimum water level in the tank should be no more than 1 inch below the aquarium rim.
What should I do If the priming process doesn't occur?
Verify that all parts are installed CORRECTLY and FIRMLY. Fill up the water in the filter case and fish tank as much as possible. Make sure the flow control valve is firmly installed and in the position of maximum flow.
Slim Filter
External | Installation | - |
4.5 x 3.5 x 2.9 (in) | Dimensions | - |
42 GPH | Max Output | - |
3W | Power | - |
Up to 5 Gallon | Fits Aquariums | - |
External | Installation | Internal |
4.5 x 3.5 x 2.9 (in) | Dimensions | 5.3 x 1.6 x 1.2 (in) |
42 GPH | Max Output | 40 GPH |
3W | Power | 3.5W |
Up to 5 Gallon | Fits Aquariums | 2 - 5 Gallon |
External | Installation | Internal |
4.5 x 3.5 x 2.9 (in) | Dimensions | 5.3 x 1.6 x 1.2 (in) |
42 GPH | Max Output | 53 GPH |
3W | Power | 5W |
Up to 5 Gallon | Fits Aquariums | 5 - 10 Gallon |
- Slim Filter Cartridge
- Magi mini
- Magi 200
Bell
Reviewed in Canada on February 28, 2025
Honestly this filter is fantastic I have had no issues with it. If you keep the water level high enough you don’t really hear anything. You can also buy packs of replacement filter cartridges from the same company! Highly recommend if you’re looking for a smaller option
Jelly
Reviewed in the United States on February 22, 2025
Is super silent, and works amazing! You can hardly see it in my 2.5 gallon tank. Sponge is removable if you don’t want it, there is a knob to control the water flow (higher or lower), it came with really easy instructions and barely makes a sound. Would buy again if I ever needed to! In the picture, it’s in the back left corner a little bit behind my driftwood.
ryross
Reviewed in the United States on February 21, 2025
This NICREW filter is pretty decent. It's small and doesn't take up much space in my tank, which I like (I have a betta named Bubbles, she loves it). The filter does its job well enough, keeping the water clean and clear. I haven't had any issues with the flow being too strong or anything, though sometimes I wish it was just a LITTLE stronger, you know? Anyway, it's easy to set up and use. (I accidentally put the sponge in backwards at first, but it still worked fine). It came with everything I needed, so no complaints there.Overall, this filter is great for small tanks like mine. The adjustable flow is a nice feature too, although I don't really mess with it much. And hey, if you need to clean the media, it's super easy and quick to do. You can't beat that! Definitely would recommend this one to anyone looking for a reliable and quiet filter for their small aquarium.
Donovan
Reviewed in the United States on February 21, 2025
If you got smaller tanks or tanks with fish that don’t like fast water this is a great product. I highly suggest checking it out there’s really no reason not to. It’s cheap, worked for about a year and still working, quiet makes no sound, and cleans the water super well u get absolutely no fog. I have one for my small 5 gallon shrimp tank and I had it for almost a year now with no issues. It worked so well I bought one for my 10 gallon today and can’t imagine any filter at this price range being better highly recommend checking this one out.
MrA
Reviewed in the United Arab Emirates on February 11, 2025
Great little filter. Effective and silent. Unfortunately stopped working after a week and I followed all instructions precisely.
Customer
Reviewed in the United States on January 15, 2025
Works pretty good for my 5 gallon fry tank. My only complaint is that it's smaller than the lid opening so water splatters out.
RUBEN
Reviewed in the United States on August 30, 2024
The media could not be loaded.
Connor
Reviewed in the United States on May 9, 2024
Have a UNS 45s shallow planted tank with 6 or so Medaka in it. Been looking for a filter mostly just for water circulation and oxygenation. I got a tetra whisper 4 at the recommendation of reddit and to their credit it is very quiet, I can't hear it sitting six or so feet away. However the biggest reason I didn't use a filter for a long time was because I was concerned about noise pollution causing stress in fish. Its an understudied topic specifically in aquarium fish but we do know that noise pollution in natural bodies of water does negatively impact fish in a number of different ways.So while I was very happy with how quiet the tetra whisper 4 was for me, when I put my ear ear up to the glass of the tank I could hear just how much noise it makes for the fish. Granted, I don't know if the fish care at all, but I was still looking out for a better option that was also still silent for me.Enter this filter. Even quieter from my perception compared to the tetra whisper 4, and the hang on back design means that the motor is outside of the water, and doesn't contribute nearly as much to the noise level inside the tank versus the Tetra whisper 4's submerged design. When I press my ear against my tank all I hear is a soft low hum, which I hope the fish appreciate. Anecdotally from what I've seen so far the fish are much more willing to spend extended time right up against the filter playing in the current.So if you want a quiet filter for yourself and maybe are concerned about noise pollution for your fish, consider getting this filter. Its cheap, and has a nice reservoir that if you don't want to use their filters, can fill with an alternative media like ceramic bio rings. The filter also has an adjustable flow rate which the tetra whisper 4 does not, and the intake element on this filter comes with a sponge to prevent an unlucky fish who wanders too close getting a fin ripped off.Anyway the Tetra Whisper 4 is still a quiet and a decent filter but for the money I would say this Nicrew slim filter beats it in literally every category.
Ich
Reviewed in Germany on February 20, 2024
Der Filter nimmt, besonders in sehr kleinen Aquarien, kaum Platz weg, da man ja nur ein Röhrchen im Becken hat. Bei mir läuft er in einem 12l Garnelenbecken. Er ist recht leise, wenn er richtig sitzt. Das ist aber problemlos hinzubekommen und ich höre den Filter nicht.Die Reinigung ist auch recht schnell erledigt und nicht sehr oft nötig. Zudem kann man alles gut auseinander nehmen. Nur das Antriebsrad ist recht schwer zu erreichen.Zum Start und nach dem Auswaschen der Filtermedien muss Wasser in den Filter eingefüllt werden. Darauf wird extra hingewiesen. Dann ist er kurz laut, was sich aber innerhalb von einer Minute gibt.Auf einen ausreichend hohen Wasserstand im Becken sollte geachtet werden, besonders wenn Katzen das Becken gern als Trinkbrunnen nutzen. ;-)Lediglich der Vorfilterschwamm am Ansaugrohr scheint mir für frischgeschlüpften Garnelen-Nachwuchs etwas zu grob. Ich bin da allerdings auch sehr vorsichtig. (Für ausgewachsene Zwerggarnelenen ist er völlig ok.) Hier kann man sich aber auch mit einem Stück Feinstrumpf behelfen oder schneidet sich einen feineren Schwamm zu recht, zumindest wenn Nachwuchs in Sicht ist und da sind meine Garnelen gerade besonders fleißig.Der Stromverbrauch ist gering. Das Filtermedium auf einem Plastikteil läuft bei mir seit fast 2 Monaten. Einen monatlichen Wechsel halte ich für etwas übertrieben, besonders wenn man ihn regelmäßig auswäscht. Ich plane diesen durch Filterschwamm und Filterwatte künftig zu ersetzen, da ich es nicht mag ständig Filterkartuschen kaufen zu müssen. Obwohl der Preis für 5 Stück bei derzeit 9,99 liegt, was dann hier für ein Jahr reichen würde.Dass das Wasser in einem breiten Mini-Wasserfall zurück ins Becken geht, finde ich hübsch und nützlich, um das Wasser mit Sauerstoff anzureichern.Alles in allem bin ich mit dem Filter sehr zufrieden und empfehle ihn für kleine Becken gern weiter.
moustache
Reviewed in the United Kingdom on February 19, 2024
Superb little filter ideal for tight spaces or use as a supplementary to boost your Nano tankWorks well, very quiet too. I suspect finding new pads may not be easy but it's sufficient to just make one from a piece of filter foam.
Lyco
Reviewed in the United Arab Emirates on April 13, 2024
Very disappointed. The product that I received came with a broken motor propeller. There’s a lot of visible deep scratches in the surface even though it was well packaged (Product box with bubble wrap within another box). It seems I was given an already used item.
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