NICREW Aquarium Internal Filter, Submersible Power Filter with Multiple Function for Fish Tanks 2 to 5 Gallon, 40 GPH, 3.5W

I held off writing this review until I'd had this for a while, so I could see how long it held up. So far, so good. A great little pump for the money. It's perfect for my 2 gallon beta tank, as it takes up very little room, and it keeps the water nice and clear for a few weeks at a time. I clean everything out about once a month.

The nicrew Filter is a amazing and efficient filter ideal for tanks up to 10 gallons but way better just to push water around. It runs quietly, Setup is simple, and the filter media is easy to swap out. Great for beginners and fish enthusiasts looking for reliable performance without much hassle.

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.

Very quiet, cleared up the water in just over a day. It fits great in my ten gallon, and after trying a few configurations I got it so it is not too much current for my betta fish.

Does what I need it to do. The instructions for attaching the hose option instead of the rain option are so unclear because it's just a couple pictures so I have only tried the rain option. The force of the water coming out is also a bit stronger than what I want and I can't see a way to adjust the power. I'm currently using it in a small 6 gallon tank, but it might be better suited for a 10 gallon or higher. I have to position the rain tube pretty high out of the water to prevent too much water movement, but as it is currently, it's creating a lot of bubbles so I don't need an air stone in the tank, so that's nice. It's also pretty noisy, unfortunately.Overall, I suggest using a larger tank and fully submerse the pump in water to dampen the noise, even if you are using the rain option. It's good for the price if you can stand the volume of the pump itself.

THE BEST FILTER I'VE FOUND SO FAR. It was so easy to set up, and it works AMAZING. It's nice to have it running in the background, it sounds like a little waterfall, and I work from home, so it's great white noise.My goldfish were even playing with it! They keep swimming up to the clean water that is being filtered back into the tank.

I have one of those odd size 6 gallon tanks. My wife houses her Betta, plants & Neocardinia shrimp. I’ve tried numerous different filters to get the correct flow setting and this one for $10 solved the issue. Using it completely submerged with the airflow tubing has also helped introduce enough air into the system I finally have my Co2 dialed in properly and no longer need an air stone running in the evening. Definitely considering trying more of what this manufacture has to offer as affordable solutions.Submerged option is pretty close to silent.

Very powerful and easy to use but I underestimated the carbon filter. It quickly turned the whole aquarium pitch black, so I removed it and did a partial water change, which seemed to help the problem. Buyers should beware that if they use the filter, it may take awhile for the water to return to a normal state.