The biOrb Maintenance Kit includes two service kits, 4 cleaning pads, water optimizer, air stone, polish and cloth, and instructions. The all-in-one Service Kit contains everything you need to complete the 4-6 week routine maintenance on your biOrb: a filter cartridge, cleaning pad, and water treatment packets. The filter cartridge contains clean mechanical filtration and new chemical filtration. It is also easy to change, a few simple twists are all it takes. The lint free cleaner pad has rough and smooth sides to remove any little algae spots, bits of dirt, etc. When you change your filter cartridge you should also do a partial water change and replace 1/3 of the aquarium water with new water. Use the water treatment packets included in this kit when you add the new water. The biOrb Water Optimiser improves biological filtration, removes impurities and benefits the well-being of your fish. It is 100% natural and completely safe. You can't overdose your aquarium with this fluid. Add a dose every week to help keep your aquarium crystal clear. The high gloss acrylic polish and microfiber cloth are used to repel dust and resist fingerprints on acrylic aquariums. The air stone diffuses the bubbles in your biOrb. Over time they clog up. To maintain oxygen levels, it is a good idea to replace it every 6 months. *Frequency of filter changes depends on the size of your biOrb and the fish stocking level. Please refer to your biOrb instructions for further details. This kit is suitable for all biOrb aquariums. biOrb aquariums add a sense of joy and wonder to your home. Basic routine maintenance can keep your biOrb clean and clear and its inhabitants happy. Depending on your choice of fish, you may only need around 15 minutes of maintenance per month. Plus, you only need a few key tools to keep it looking great. Features: Basic routine maintenance can keep your biOrb clean and clear and its inhabitants happy. The biOrb Maintenance Kit includes two service kits, 4 cleaning pads, water optimiser, air stone, polish and cloth, and instructions. All-in-one biOrb Service Kit contains everything you need to complete the 4-6 week routine maintenance on your biOrb: filter cartridge, acrylic-safe cleaning pad, all-natural, non-toxic water conditioner and biological booster packet, and instructions The filter cartridge contains clean mechanical filtration and new chemical filtration. It is also easy to change, a few simple twists are all it takes. The lint free cleaner pad has rough and smooth sides to remove any little algae spots, bits of dirt, etc. When you change your filter cartridge you should also do a partial water change and replace 1/3 of the aquarium water with new water. Use the water treatment packets included in this kit when you add the new water. biOrb Water Optimiser improves biological filtration, removes impurities and benefits the well-being of your fish. It is 100% natural and completely safe. You can't overdose your aquarium with this fluid. Add a dose every week to help keep your aquarium crystal clear. The high gloss acrylic polish and microfiber cloth are used to repel dust and resist fingerprints on acrylic aquariums. The air stone diffuses the bubbles in your biOrb. Over time they clog up. To maintain oxygen levels, it is a good idea to replace it every 6 months. *Frequency of filter changes depends on the size of your biOrb and the fish stocking level. Please refer to your biOrb instructions for further details. This kit is suitable for all biOrb aquariums. Includes: 2 filter cartridges, 2 water conditioner packets, 2 biological booster packets, 1 air stone, 6 cleaning pads, 1 bottle of water optimiser, 1 bottle of polish, 1 polishing cloth, and instructions Product Dimensions: 5.31 in x 3.94 in x 6.1 in Product Weight: 1.2 lbs Directions: Assemble according to manual instructions. Caution: Consult with your local aquatics store about the environment your fish needs. biOrb Maintenance Kit | PetSmart