Emperor power filters come with total 3-stage filtration. In order to maintain a clean,
healthy aquatic environment, three stages of filtration are required. Stage one, mechanical filtration, to screen out dirt and debris. Stage two, chemical filtration, where the activated carbon removes odors, discoloration and impurities. Stage three, biological filtration, to eliminate toxic ammonia and nitrite on contact. For a crystal clear, healthy aquarium use the Emperor power filter.

 

Two sizes to filter aquariums up to 80 gallons.