GloFish Aquarium gravel completes your GloFish experience and complements GloFish. This gravel is specially selected to stand out under the blue lighting in your GloFish aquarium. Simply add gravel to your aquarium, decorate with GloFish plants and add your GloFish. Creates the perfect base to let your fish, plants, and ornaments stand out Used in combination with a GloFish Light to complete your Glo tank Rinse gravel before using Available in a range of colours: White, Black with Fluorescent accents Available Size: 5lb