NICREW Aquarium Internal Filter, Submersible Power Filter with Multiple Function, Aeration System with Sponge Filter for Fish Tanks 10-20 Gallon, 100 GPH, 7W

I’ve been using this small internal filter for a few weeks in my 5 gallons tank and it does a good job. It’s compact and easy to set up, and doesn’t take up too much space inside my aquarium. The flow is gentle enough for my fishes but still keeps the water moving and super clear. It runs pretty quietly too, which is a big plus, but it is not completely silent either. The only thing to note is that you’ll need to clean the sponge fairly often since it’s small, but that’s expected with a filter this size. Overall, it’s a reliable little filter for small tanks. Great value for money.

Works great for my 5.5 Gallon tank, I actually modified it some in which then it works even better, inside the filter is a plastic basket that holds a small pouch of carbon, the basket has small holes, so I actually used the Fluval Zeo-Carb loose in there, it is big enough that nothing escapes! Works great! Then I trashed the little pre filter that comes with this, I felt it had large pores which let a lot through, and I got the Fluval Phosphate filters, and I cut them to size and put them as the pre filter, I think it makes it one of the most efficient filters I've ever had, and it SUPER QUITE I love that if I keep it just slightly above the water as it sprays from the long attachment it creates some bubbles, enough that my guppies are super happy, which is good because typically bubblers are very loud.

I bought this filter at the beginning of January, so I’ve been using it for almost 3 months now. Overall, I’m really happy with it and I feel like it was a great upgrade for my tank. The filter feels like good quality and it has two types of filtration that work really well together. One is a sponge that catches most of the dirt and debris, and the other one is like a bag with filter media that helps clean the water even more. Together they do a really good job. Before this, I had a waterfall filter that came built into a rock decoration with my tank, and honestly it never worked properly. The water was always dirty no matter what I did. After switching to this filter, I immediately noticed a huge difference. It only took about 15 minutes after turning it on for my tank water to look clear again. This filter is rated for 20 to 40 gallon tanks, and mine is 20 gallons, so it fits perfectly and has more than enough power to keep everything clean. The only downside is that it does make some noise, which can be a little noticeable at night. Also, I had some bad luck because the replacement piece for the motor propeller came broken, so that’s why I’m not giving it a full 5 stars. Other than that, it’s a really good filter and I would still recommend it. It keeps the water very clean and works exactly as expected. Also, my turtle actually loves it and likes to sit under the water flow, it even looks like she’s dancing when the water hits her shell.

Perfect for quick filter. Extremely affordable and reliable. I keep spares just in case.

Stella loves her clear home. This small yet efficient filter cleared up the tank overnight. It comes with options on water flow and more than worth the cost. Highly recommended.

I'm actually pretty surprised by this little filter. I got the one for 2 to 5 Gallon, 40 GPH, 3.5W and I have it in a 4 1/2 gallon bowl for my Betta. It works well and keeps the water very clear. It's pretty strong, see my video 🤣 but he seems to like it. I unplug it at night for him just in case. Super easy to install and it's pretty small and doesn't take up much space which is awesome. It sticks to the side well with the little suction cups and even on my curved bowl it holds on well. My ONLY complaint is it said one of the stages of filtration was carbon but I put driftwood in my tank and it's not removing the tannins so I'm honestly not sure if it's actually carbon in there. I took it apart and there is a little baggy of something along with a spong but not sure. It's definitely not removing tannins I'm having to do water changes until they stop releasing.

This is a decent filter until it decides to crap out on you. The whole spray bar filter is really nice to look at, but it only took a couple weeks for mine to grow nasty looking mold on the inside. After removing it, the filter impeller had trouble spinning and eventually wasn't filtering anything at all. Then again, for only 10 bucks, I wasn't expecting NASA level technology, so I guess it's alright.

I bought this for a 10 gallon saltwater quarantine tank and it seems to serve that purpose well....but, the filter media is very small and requires cleaning or replacement often. For me it's 2 or 3 times a week to keep the tank water clear and clean. If you had this in a 10 gallon display tank, I think you would get tired of working on the filter so often. I only set the quarantine tank up when I plan to get new fish so not a big deal for me. I have considered buying a second one to have on hand just in case something goes wrong. The filter is quiet, plug in and go, moves a lot of water, and does a good job of keeping my quarantine tank water clear and clean with some regular attention. Some people say that it is too powerful and blows their fish around the tank. I think that depends on how it is set up and oriented in the tank and if you are looking to mimic a calm river pool or a coral reef with constant ocean waves moving the water. I would buy this again for the purpose it serves. 4 stars only because of the need to clean the filter often being so small. I would buy this again if it lasts a while. Exceptional for the price.

I bought this filter in June 2025, and this filter works fantastic so far for my 5 gallon betta tank (I got the mini filter 3.5w)! The tank stays very clean and oxygenized without stressing my betta out, since the waterfall-like option gives a gentle, not overly disruptive water flow that I can adjust the position as needed. My old filter that came with the tank I found was too stressful and my late betta had a hard time swimming through, but my current betta seems to swim around this one with ease. I do have the water flow streaming onto a rock which helps too (see pic). It's very easy to set up as you just put it together and plug it in, no additional pumps required. Overall, this filter is way cheaper than my local pet stores and works much better without being overpowering for my betta. If it were to break, I would definitely buy this again.

Bad product l. It worked for 12 hours and stopped completely. Unfortunately I could not return it as I passed the return window. Don’t buy it

El artículo es muy chico, se tapa constantemente el servicio que da no ca de acuerdo a su costo.

I bought every adaptor I could find and still cannot plug it in properly. Very annoyed that it even needs an adapter in the first place. Basically unusable.

I bought this product, but when I used it for the first time, it didn't work. What a waste of money. I wish the seller would give me a replacement. 😢😢