GloFish Aquarium Gravel sets the stage for a unique aquatic experience. This gravel not only provides a base for all your GloFish ornaments and plants, but it also looks magical under your GloFish aquarium’s blue LED lights. GloFish Aquarium Gravel is available in a range of colors. Use one pound of gravel per gallon of water. Rinse gravel before using. For the best GloFish viewing experience, try using a blue wavelength light, like GloFish LED lighting, to give a uniquely fluorescent look, particularly in low or nighttime lighting. Traditional white aquarium lights work well for daytime use. Your friends and family will love watching your GloFish aquarium come alive under GloFish lighting. Born Brilliant. GloFish fluorescent fish are born with their brilliant colors. They get their natural, vibrant hues from their parents and are not injected, painted or dyed. Enhanced by a full range of aquarium kits, lighting, décor and accessories, GloFish products create a complete underwater fluorescent experience that appeals to all ages and levels of expertise. Transform any aquarium into a GloFish environment at the click of a switch.