Large Double Head Bio-Sponge Filter

This Double-Head Bio Sponge Filter is excellent for aerating and filtering aquarium water.

It is super easy to use. Simply, put it in the fish tank, connect it with an external air pump, and turn it on.

The pump pushes air into the air tube which then travels to the spongy chambers. As a result, tiny bubbles originate from the inside of the sponge which draws water.

This water suction process collects the debris mechanically without trapping the baby fish and the two sponge filters allow aerobic ba...