【Aquarium Ornament】Provides a feeling of natural environment and great fun for you and your fish. It is completely safe for aquatic fish and suitable for both freshwater and saltwater environments 【Safe Material】Each decorative piece considers the safety of your fish. This material is safe for both freshwater and saltwater aquariums and will not fade over time. 【Delicate Design】The lid of the box can be opened and closed with pressure of the oxygen pump. Contains an air hose that can be connected to the valve or pump to create bubbles and achieve the ideal effects. 【Easy to Use】This aquarium treasure chest decoration will transform your aquarium normal. Just clean this accessory and put it in our aquarium. Within minutes you will have a luxurious aquarium.