【Aquarium Ornament】Provide a natural environment feel 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 piece of decoration 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 box lid can be opened and closed with the oxygen pump pressure. Includes 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 normal fish tank. Just clean this accessory and put it in our fish tank. In a few minutes you will have a luxurious aquarium.