Review on 🐠 NO.17 Submersible Aquarium Internal Filter Pump, Adjustable Fish Tank Filter with Water Pump for Optimal Water Filtration in Fish Tank by Ruth Barrier

That's great! To be honest I'm amazed at the strength of this little beast. This is so much better than the Fluval U4 filter that I sent back because I killed my fish with my horrible mount that got my beautiful koi betta stuck and suffocated. It's so beautiful and very quiet. It's a bubble city if you put an airline on it! I have this on my BioCube 32 for extra filtering and backup. I will be buying another one soon for my 50 gallon fresh water tank. Seriously, you'll be surprised at how good this thing is. I was afraid to buy an off-brand filter, but it turned out to be amazing. I can't even hear it, which is important because my aquariums are in my bedroom.