Bubble Decoration: Eco-friendly resin made of non-toxic, non-polluting material and will not fade over time. Suitable for aquariums and circulation systems. Creates water currents and dazzling underwater scenes. For air bubbles - Connect this decoration to an air pump to increase oxygen and decrease CO2. Create many small bubbles (air pump not included). Enhance the natural landscape of your aquarium to bring vitality to your fish. Simple maintenance: measures approximately 68 x 68 x 119 mm (L x W x H). Will easily adapt to any aquarium. This decoration will allow you to get the ideal waterscape you dream of. Optimized design - manufactured with great attention to detail - stable resin material for optimal hold. Requires no special maintenance and is easy to clean. Very decorative - Each decoration is carefully packaged to ensure that it is complete, without any defects and perfectly delivered. Designed for both freshwater and saltwater aquariums, can add a touch of mystery to your