Aqueon Large Filter Cartridge - 12 pk The Aqueon Power Filter cartridge eliminates mechanical and chemical debris in your aquarium. Easy-to-replace cartridge contains over 25% more activated carbon than similar filter cartridges.

Aqueon Medium Filter Cartridge - 12 pk The Aqueon Filter cartridge eliminates mechanical and chemical debris in your aquarium. Easy-to-replace cartridge contains over 25% more activated carbon than similar filter cartridges.

Aqueon Mini Bow Filter Cartridge Small - 6 pk The Aqueon Filter cartridge eliminates mechanical and chemical debris in your aquarium. Easy-to-replace cartridge contains over 25% more activated carbon than similar filter cartridges.

Aqueon Mini Bow Filter Cartridge Small - 3 pk Three replacement filter cartidges for Aqueon Mini Bow Aquarium Kits. Fits both 2.5 and 5 gallon kits.

Aqueon Large Filter Cartridge - 6 pk The Aqueon Power Filter cartridge eliminates mechanical and chemical debris in your aquarium. Easy-to-replace cartridge contains over 25% more activated carbon than similar filter cartridges.

Aqueon Medium Filter Cartridge - 6 pk The Aqueon Power Filter cartridge eliminates mechanical and chemical debris in your aquarium. Easy-to-replace cartridge contains over 25% more activated carbon than similar filter cartridges.

Aqueon Medium Filter Cartridge - 3 pk The Aqueon Power Filter cartridge eliminates mechanical and chemical debris in your aquarium. Easy-to-replace cartridge contains over 25% more activated carbon than similar filter cartridges.

Filter Cartridge for Rapids Filter PF-80 - 3 pk Keep your filter working at its best with replacement mechanical/chemical filtration cartridges. Floss removes particulate matter from the aquarium while activated carbon removes odors and discoloration. Water is left clear and healthy for your fish or invertebrates.

For best results, change your cartridges at least once a month.

Replacement Cartridge for System 3, Hex 5 and Explorers - 3 pk The green, Rite-Size Z Replacement Cartridges fits the Eclipse System Three and the Eclipse Explorers. Each cartridge contains 1 oz of super activated carbon and a double-thick polyfiber pad. The horizontal design with ribbed backing ensures even carbon distribution and no water bypass.

Rite-Size Cartridge: Z

Eclipse System Six Cartridge - 3 pk Ready-to-use filter cartridges contain Black Diamond Premium Activated Carbon, for optimum health and clarity of your Eclipse Aquarium. Double-Thick polyfiber pad for added mechanical filtration. Fast and easy to use.

Rite-Size Cartridge: K

Cartridge for Eclipse 2 and 3 - 3 pk Each preassembled cartridge slides easily into place, providing superior mechanical and chemical filtration, and making replacement fast, dry and effortless. The cartridge mechanically filters water through a pad of double thick polyfiber. Debris and waste particles are trapped, and water is chemically filtered through Marineland's Black Diamond Premium Activated Carbon. Inside the cartridge, a patented ribbed backing ensures the even distribution of activated carbon to deliver maximum water-to-carbon contact.

Rite-Size Cartridge: H

Cartridge for Eclipse 1 and Twelve - 3 pk Each preassembled cartridge slides easily into place, providing superior mechanical and chemical filtration, and making replacement fast, dry and effortless. The cartridge mechanically filters water through a pad of double thick polyfiber. Debris and waste particles are trapped, and water is chemically filtered through Marineland's Black Diamond Premium Activated Carbon. Inside the cartridge, a patented ribbed backing ensures the even distribution of activated carbon to deliver maximum water-to-carbon contact.

Rite-Size Cartridge: G

Bio Matrix - Floss and Carb Set - 12 pk The exclusive Bio Matrix Cartridge has been specifically designed to optimize the filtering capacity of all Aquamaster (except PL and PM Series) and Skilter Model filters. This package contains twelve sets of replacement media (carbon and polyester).

Bio Matrix - Complete Cartridge - 4 pk Bio Matrix floss and carbon replacement filter cartridge for your Skilter and Aquamaster filters (except for PL and PM series).

Bio Matrix - Floss and Carb Set - 4 pk Replace the filter media in your Skilter or Aquamaster with Bio Matrix floss/carbon set.

Bio Matrix Cartridge for Skilter and Aquamaster Filters Package contains one floss pad and one carbon pad in a black frame for use in the Skilter or the Aquamaster (except the PL & PM series) filters.

Emperor Cartridge - 4 pk The preassembled Emperor Filter Cartridges filter aquarium water through a 44-square inch filter pad. Made of double thick polyfiber, it traps more waste and dirt particles. Inside, each disposable filter cartridge contains 2 full ounces of Black Diamond Activated Carbon. It works longer and faster to absorb harmful pollutants which discolor aquarium water and cause odors. It's better than a filter bag: just shake and rinse. The patented ribbed back design evenly distributes carbon for maximum aquarium water-to-carbon contact. No tea bag effect...just crystal clear, clean aquarium water. Emperor Filter Cartridges provide supreme mechanical and biological aquarium filtration in both freshwater and saltwater aquariums. Designed for both the Emperor 280 Filter and Emperor 400 Filter.

Rite-Size Cartridge: E

Emperor Cartridge - 2 pk The preassembled Emperor Filter Cartridges filter aquarium water through a 44-square inch filter pad. Made of double thick polyfiber, it traps more waste and dirt particles. Inside, each disposable filter cartridge contains 2 full ounces of Black Diamond Activated Carbon. It works longer and faster to absorb harmful pollutants which discolor aquarium water and cause odors. It's better than a filter bag: just shake and rinse. The patented ribbed back design evenly distributes carbon for maximum aquarium water-to-carbon contact. No tea bag effect...just crystal clear, clean aquarium water. Emperor Filter Cartridges provide supreme mechanical and biological aquarium filtration in both freshwater and saltwater aquariums. Designed for both the Emperor 280 Filter and Emperor 400 Filter.

Rite-Size Cartridge: E

API nexx Phos-Zorb - Size 4 - 2 Pack Eliminates cloudy water by removing phosphate and silicates, which are naturally occurring nutrients. Promotes the growth of reef-building corals and prevents calcium precipitation caused by excess phosphate. Safe for all fish, invertebrates and planted aquariums.

API nexx Nitra-Zorb - Size 4 - 2 Pack API nexx Nitra-Zorb is a combination of natural and synthetic ion-exchange resins that selectively remove ammonia, nitrite, and nitrate from freshwater aquariums. It’s also great for starting a new aquarium, as it prevents unhealthy ammonia surges. Completely phosphate free and can be reused after recharging.