Foam Filter Inserts, 3 Pack – Replacement Mechanical and Biological Filter Media for 70 Gallon Tanks

Filter Compatibility: Compatible with AquaClear 70 Power Filter. Double Duty: These foam filters perform as both mechanical and biological filters. Intricate Design: The dense structure is ideal for trapping small particles, with an intricate, porous network that provides vast surface area to facilitate biological activity. Versatile: This filter media is suitable for freshwater and saltwater aquariums. Replace monthly for best results. Additional Features: Will not affect water characteristics.