Bubble Decoration: This eco-friendly resin is non-toxic, non-polluting and will not change color over time. Suitable for aquariums and recirculating systems. Create dazzling water currents and underwater scenes. Bubble - Connect the decoration to the air pump to increase oxygen levels and reduce CO2. Lots of little bubbles will form (don’t count the air pump). Improve the natural landscape of the aquarium and add vitality to the fish. Easy care: The size is approximately 6 x 6.5 x 11 cm (length x width x height). Easily adapts to any aquarium. This decoration will make you realize the ideal waterscape of your dreams. Sleek design: The details are carefully designed, and the resin material is stable. It requires no special maintenance and is easy to clean. Highly decorative, each topper is carefully packaged to ensure it is complete, flawless and ready to ship perfectly. Specially designed for freshwater and saltwater aquariums, it can add a touch of mystery to your aquarium and the