The Marina iGlo Decoractive Galaxy Gravel is a great way to create a unique and immersive environment for your aquarium fish. This gravel is made of a natural stone that produces a beautiful glow under blue light, and it can be mixed with other gravel to create a variety of different looks. The dust-free gravel is non-toxic and safe for use in aquariums, and it creates a vibrant, engaging environment for your fish.