Customize your mechanical, chemical, and biological filter media or convert to a living refugium with our larger and more robust CustomCaddy media baskets. Choose between your favorite filter pads, activated carbon, ion exchange resins, or synthetic polymers to target specific toxins and pollutants. All CustomCaddy media baskets are designed to fit all NUVO aquariums to boost filtration and extract a wide range of impurities for a cleaner and clearer aquarium. Features (4) laser cut slots and (2) slide out acrylic shelves to accommodate the media of your choice. Convenient sliding door grants quick access for ultra-fast media changes and makes maintenance a breeze.