REPLACEMENT FILTER CARTRIDGES: Fit Marineland Penguin Bio-Wheel Power Filters.
EASY TO INSTALL: Pre-assembled cartridges slide easily into place, providing superior mechanical and chemical filtration and making replacement fast, dry and effortless.
OPTIMUM WATER-TO-CARBON CONTACT: Patented ribbed backing ensures even distribution of carbon for crystal clear, clean water.
COLOR-CODED PACKAGING: Rite-Size packaging makes it simple to choose the right size replacement cartridge for your filter.