Fluval C4 Power Filter, Fish Tank Filter for Aquariums up to 70 Gal.Brand: Fluval Color: Black Features: 5 stage clip on power filter designed for freshwater and saltwater aquariums between 40 and 70 gallons Two mechanical stages trap large and fine debris, foams easily slide out for quick cleaning Chemical stage with activated carbon effectively removes toxins Biological stage features Bio Screen pad, blocks debris and provides massive surface area for beneficial biological activity Biological Trickle Chamber super