"Aquario Neo Co2 Diffuser Tiny Curved The best just got better! The Neo Co2 diffuser from Aquario features microscopically small holes resulting in very fine and thorough bubble diffusion. The microbubbles produced allow for better Co2 dissolution in your water column, effectively allowing aquatic plants to absorb Co2 properly. Sleek and sturdy, the Neo Diffuser is made from transparent acrylic and is not easily broken when performing aquarium maintenance. Unlike other diffusers, the Neo diffuser curved type will not be an eyesore! Aquario Neo curved versions come already bent and can sit over the rim of your tank without the need for suction cups! You can use the provided suction cups to secure your Co2 line to the outside of your tank. Soak it in water for 30 minutes before use to produce smaller bubbles. Product Features: Reduction of back-flow pressure Smaller bubble than existing products Hard-to-break, elastic PC (poly-carbonate) pipe Full improvement (angel, joint, length, diffusion area) Available in 1 size and 2 lengths Tiny SS up to 10 gallons (15 cm) Glass up to 8 mm Tiny S up to 10 gallons (23 cm) Glass up to 8 mm Length : SS : 15cm / S : 23cm Width of clip : S & SS : 9mm"