Bubble decoration: This ecological resin is non-toxic, non-polluting and will not change color over time. Suitable for aquariums and circulatory systems. Create dazzling water currents and underwater scenes. Air bubble - Connect the decoration to the air pump to increase the oxygen content and reduce CO2. Many small bubbles are produced (not counting the air pump). Improve the natural landscape of the aquarium and give vitality to fish. Simple maintenance: The size is about 6 x 6.5 x 11 cm (length x width x height). Adapts easily to any aquarium. This decoration will allow you to realize the ideal aquatic landscape of your dreams. Optimized design: The details are carefully manufactured and the resin material is stable. It does not require any particular maintenance and is easy to clean. Extremely decorative, each decoration is carefully packaged to make sure it is complete and irreproachable and can be delivered perfectly. Specially designed for freshwater and salt water aquariums,