The filter cartridge in your biOrb® should be changed every 4-8 weeks, depending on fish load and size of aquarium. The biOrb® Maintenance Kit provides a full maintenance solution for your aquarium -- enough for 8-16 weeks! Enjoy 40% savings as compared to buying all components separately.
(3) Filter Cartridges with filter, sponge, charcoal and water stabilizers
(6) acrylic-safe Cleaning Pads for removing dust and grime
(3) each of Water Conditioner and Biological Booster 5ml packets
(1) replacement Airstone to keep aeration in peak performance
(1) High Gloss Polish with Cloth to produce a brilliant shine on your biOrb®