Touker Aquarium Shell bubbler is a must have decor for your fish tank, create exotic landscape for your aquarium .also can create a lot of small bubbles in water, Increase oxygen levels, lower CO2 and raise PH, keep your aquatic creature healthy ! Features: - Made of high quality resin, durable, washable, no face color in water - Creative vivid shell Shape bubbler, super realistic - Increase oxygen levels, lower CO2 and raise PH. - Exotic Landscape for aquarium - Peral tropcial shell Specifications: Product Name: Aquarium Shell Ornaments With Air Stone Bubbler Material: Plastic Shape: Pearl and shell Size: 5 x 5 x 6.5 cm Weight: Approx 150 g Suitable for inner diameter 4mm soft tube Package Included 1 x Aquarium Shell with Air Bubble Stone