GloFish aquarium gravel and accents are just what's needed to add the extra color and unique look to your GloFish aquarium! While any substrate intended for freshwater aquariums is fine for your GloFish, using the specially colored GloFish gravel will enhance the look of your aquarium and your fish with the vibrant, neon colors. This gravel is beautiful and bold even under regular lighting, but will fluoresce and add intensity to your tank with blue wavelength lighting. Like standard gravel, it should be thoroughly rinsed before adding to your aquarium. Approximately 1 - 2 pounds of gravel per gallon of water is recommended to help promote growth of healthy bacteria, reduce the amount of unhealthy debris in the water, and provide an anchor for plants and decor.