uxcell XINYOU XY-380 Aquarium Fish Tank Biochemical Sponge Filter, 4-1/2-Inch (1-Pack)

Works great as a supplemental filter, mechanical and biological, for my 40 gallon tank with about 20 to 25 fish in it.

Very nice sponges for the price. I use them in all my 20 gallon guppy and shrimp breeding tanks. These filters could easily handle much larger aquariums.

Bought this as an aux filter for my 90 gallon. I have a fluval 407 and just wanted for the end opposite the external. This is quick to clean and reduces the cleaning of the big filter. Happy with the buy

This is a great sponge filter.

its a good filter,but way too big!

Little lackluster when using just an airline. Attached a 450GPH power head on this and easily clears a 55gal.

I should of bought a dozen at that price! I dont know how they do it but Im glad they do! Oh you want a review of the product its awesome at an amazing price!

This is the sponge filter you need. Ive tried other brands and some are so high density, they collapse. This is great for fish big and small, easy to clean monthly in tank water and has enough body to not crush down. Ive ordered 8 of these. Nice weight on the bottom too.

Came early works great just didn’t come with the plastic tube that cover the air tubing

Great for breeding tanks