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

Does the job... Great value...

Dont get a box filter and buy new media every other week. These things have no moving parts, they last forever, theyre dirt cheap, and they work great. Thats why theyre hard to find in the big box pet stores. Theyre good for fish owners, bad for people who own fish stores. Water quality is what kills your fish or keeps them alive. These things are like gold.

its a good filter,but way too big!

That’s right, high quality and made in china. The plastic is all thick and durable. It is properly weighted and the sponge material is a nice quality. I’m ordering a second set of three so that I always have filters cultured and ready for quarantine/tank transfer method.

Great additional cleaning of small debris.

I added this to a 45g tank with a HOB filter already installed. It has added movement to the water and made it very clear. I was really surprised how effective something so simple could be.

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

Great sized sponge filter for my 75 gallon. The size of the sponge is large, but not so much that it floats every time I change the water in my oscars tank (a couple of times a week), like I have found with other, larger sponge filters because of air bubbles in the sponge.

this filter is not heavy enough to stay put...itll start floating. I had to put a small rock on top of it in order for it to not float

I use it in my 1 gallon fry tank. Works well and keeps bio filter going.