Features: 1Bubble counting function: Aquarium CO2 diffuser has an independent bubble counting function, which is a perfect combination with refinement. 2THINNING SHEET: The thinning sheet of fish tank CO2 atomizer is made of excellent nano technology, which brings better thinning effect. 3HIGH DISSOLUTION RATE: The exhalation of CO2 diffuser is delicate and the dissolution rate is high, keeps plants in fish tank lives vividly. 4ACRYLIC MATERIAL: Aquarium CO2 bubble diffuser main body is made of acrylic material, and the product is translucent, like crystals. 5EASY TO OUTGAS: Acrylic CO2 diffuser required pressure is small, it is easy to outgas, and it saves original materials. Item Type: Aquarium CO2 Diffuser Material: Acrylic Package Included: 1 x CO2 Diffuser 2 x Suction Cup