Hygger Sponge Filter, Aquarium Filter Double Sponge Replaceable Media with 4 Biochemical Sponges and 1 Bag of Filtered Ceramic Balls Ultra Quiet Filter Fish Tank for 10 to 40 Gallon（S）

I stand by sponge filters, and this one fits in my 20 gallon long, its a bit large but fits comfortably. The extra filtration with the ceramic balls are nice, but the suction cups (for me) didn't work well so thankfully once its water logged sinks down. The parts come apart easy, and imo a little too easy. When I fiddle with positioning it popped off but once inside the tank positioned it doesn't come apart. I let it run alongside my older and smaller sponge filter (about a week and a half) to seed the bacteria before i completely took out the old filter. It definitely works better than my other one! my loaches like to hide under them, though be warmed if the top comes over the water it is very noisy compared to my old ones (though it doesnt bother me because i like the sound of water)

I got this today and set it up, so far this seems to be great! Cleared my water up really well and moves the surface just enough! I also really like the fact that it has the removable bases, which I added my own materials to and not what it came with! Did filter media on one side and carbon on the other! Seems to be really quiet and perfect strength for my betta!

Really great stuff. Hygger delivers, again.

i was skeptical of useing a sponge filter but with the added bio rings i gave it a shot.works well and the slide off sponges really make it simple to clean.

The media could not be loaded.  I have a twenty gallon tank which had the basic waterfall type filter. It didn’t produce any air bubbles it just agitated the water which black moors don’t love. This one produces a lot of bubbles without causing motion. It has suction cups which hold securely to the glass. The tricky part was getting the tubing on. You’ll need to soften it with hot water to get it on. It took me several minutes before I got the bright idea to do it! It is easy to clean all the pieces come apart and I use those little brushes that clean straws to clean inside the plastic parts. The tube that produces the air bubble is expandable so it can accommodate larger tanks than mine as well. My fish is very happy with this filter too he likes to swim up to the bubbles.