These easy to use sponge filters connect to an air pump (not included) to provide an optimum base for biological filtration.
Pisces E-Jet Filers removes finer particals of debris from aquarium water while creating a benificial colony of bacteria. Recommended to replace every 3 months with interval cleaning.
Directions:
Maintain filter by cleaning sponge in aquarium water syphoned into a bucket and replacing filter sponge every 2-4 Months