【Quality Material 】 Made of the environmental material PU.PVC. Resin which won't cause influence on water quality. which is durable, not easy to fade and eco-friendly. 【High Simulation 】. Decorative fish tank is very realistic, it swings that follow water flows! it can bring you a pleasant visual feeling. Plus bright color, create an ideal underwater world for you. 【Easy to Clean Easy to use】 just directly placed it in the tank, the sand of planting fish tank. You can clean with a rag and water. It's an ideal decoration for your fish tank with this lifelike ornament. 【Wide Application 】 It can be used to decorate the aquarium and tank, making them look closer to nature, reduce the pressure on fish; Beautify aquarium, for nitrification bacteria provide places; An excellent hiding place for fish which adds extra fun to play. , it does not have any pollution and injury for aquarium creature. 【 Safe for Fish 】Non-toxic & odorless, they are absolutely safe for fish, they won't be hurt, rot or cause any algae problems; Not need lighting and carbon dioxide; Fit in both fresh and salt water.