NICREW Slim Aquarium Filter, Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums, Adjustable Flow, 42 GPH, 3W

This product is one of the worst products I have bought. If you need my evaluation, I will give it a bad evaluation because it broke down in the first week and when I started using the product, it was very hot. I do not advise people to buy it and I advise them to buy any other product.

Stopped working in the first 3 hours of use

Great little filter. Effective and silent. Unfortunately stopped working after a week and I followed all instructions precisely.

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.

Great little water pump—easy to install, very quiet, and keeps the water flowing nicely. My fish seems more active and comfortable, so it’s definitely doing its job! I just wish it was usb connection.

This will be my go to HOB for 1-5 gallon and my first choice for a 10 gallon betta set up. I have two top fin 5 gallon tanks that I bought in an emergency situation. The filters they came with were intrusive, they hung inside the tank, and were garbage at their intended function. After about 6 months of dealing with them I searched for a replacement that would fit and work. The lids that came on the top fin tanks had a cut out for the filters so I needed something that would allow the lid to fit because we have a cat. After a couple hours of research and with cost in mind I chose these. And I’m extremely happy. They are very quiet, do the job they are suppose to and look good doing it. The flow adjustment is responsive and the design of the flow knob is easily serviceable. In my opinion with weekly water changes they are perfect for heavily stocked 1-5 gallons and may even be used for something like a 10 gallon planted betta home with light flow.

I have had this filter for quite a few months and I really love it. It is very quiet and I like how small it is. It comes with a few sponges to change, and I find the pressure is good for my Betta. I am not sure about the longevity, but I find the price alone is worth it. I do not care if I'd have to buy one every year.

This filter works perfect for a little Top Fin 3 gallon tank. I have a small tank set up for Corydora fry and needed a decent filter with an intake pipe. The filter that came with the aqaurium was trash, and I did not like it. It pulled from the bottom and kept sucking fry up. The first replacement filter that I got did not have a place for carbon or any type of sponge. This one is seriously perfect. It has a carbon cartridge with a sponge and also a sponge filter for the intake. It helps pre-filter AND keeps from sucking anyone up. The replacement cartridges are not expensive (6 for $9.99 or 12 for $14.99). It is very easy to clean and does not make any splashing sounds. It has a big enough area to add your own media, if needed. The carbon keeps everything circulating to avoid any funky smells. *I just put it in before taking photos, so the tank is not the cleanest.

Great little filter, was a bit skeptical at first that it would keep my aquarium clean but it has worked In my tank and kept it clean with ease. Definitely is best for a small tank though as theres a small filter pad that can get filled quick.