The Besimple Artificial Coral Ornament Glowing Effect Resin Aquarium Plants Coral Aquarium Fish Tank Decorations are made of high-quality silicone and plastic that is soft and durable. These decorations are safe for use in an aquarium, fish tank, or garden. The blue or purple lights bring a fantastic sea world landscape to your aquarium. The package includes one artificial coral decor and one fish tank cover.