The Hygger glass mounted single sponge filter is perfect for aquariums up to 15 gallons. The outlet is telescoping and directional so you can adjust the water/air flow to the desired level and direction.

One of the best things about this filter is the fact that it can be mounted on the glass on the back or side of the aquarium so as to not interfere with Aquascaping.

Each filter comes with an extra sponge which is great because you can clean one while using a fresh sponge or if you have fish that like to nip at the sponge you have a back up once the original is deteriorated.