The PhosBan reactor is the perfect entry level reactor to new hobbyist.
Use with PhosBan to safely keep phosphate levels low in freshwater and marine (including reef) aquariums for several months. Highly porous, super adsorbent, ferric oxide hydroxide-based media effectively binds large amounts of phosphate, organic compounds, and other pollutants. Won't leach pollutants, even when fully saturated.
PhosBan Reactor Extension Kit for Reactor 150: Contains parts to convert the PhosBan Reactor 150 for convenient hang-on installation on aquarium or on the side of a filter sump.