Internal filters sit inside your aquarium, they contain sponge and charcoal, but you also have the option to fill with noodles and other filter media. Great for removing excess dirt or additional filtration when you have large fish that are starting to outgrow their current home. Attaching airline to the outlet of the filter will draw air in creating a stream of bubbles from the filter.
Flow rate is not adjustable.
For small tanks up to 20L.
18cm tall.