​​LINLAN 4-Piece Aquarium Glass U-Tube Connector with Anti-Kink Design | for 4mm (5/16") ID Air Hose | Air Pump & CO2 Diffuser Accessory for Rimless Tanks​

• 【 HIGH-QUALITY GLASS CONSTRUCTION】Made from high-quality transparent glass, this U-shaped connector maintains an unobstructed view without disrupting the visual flow of your aquascape—perfect for aquariums where aesthetics matter.
• 【SHORT CO₂ DIFFUSER COMPATIBILITY】Many short glass or acrylic CO₂ diffusers cannot be mounted directly on the aquarium wall and often look messy. This U-shaped connector neatly organizes the air tubing, keeping it flat and tidy for a clean, aesthetic setup.
• 【PREVENTS TUBING KINKS, ENSURES CONSISTENT AIRFLOW】 Essential for air-driven equipment like sponge filters and air stones. The smooth U-bend stops flexible oxygen tubing from kinking, which compresses the tube and reduces efficiency. This ensures optimal airflow and a neater appearance.Suitable for sponge filters and air chambers.
• 【SCRATCH-RESISTANT & EASY TO CLEAN​】Unlike acrylic tubes,which are prone to scratching and cloudiness after cleaning—especially when dealing with algae buildup—this glass U-connector is scratch-resistant.wipes clean easily, and maintains its clarity even after repeated washing.
• 【 WIDE COMPATIBILITY WITH RIMLESS AQUARIUMS FOR RIMLESS AQUARIUMS】Compatible with most rimless aquariums using standard CO₂ systems or air pumps for tanks with glass thickness under 15mm (0.59in). Compatible with check valves to prevent backflow.

Product description Professional aquarists often face cluttered air hose that ruins tank aesthetics. Traditional solutions rely on bulky plastic parts. LINLAN glass U-tubes make it easy to balance CO2 tubing management with aesthetically pleasing aquarium designs! Core Advantages Stable & Efficient CO₂ Delivery: Ensures a consistent flow of CO₂ to your diffuser, producing fine bubbles that supply ample carbon for healthy plant growth. Clog-Resistant & Stable Design: U-shaped structure designed for rimless tanks (up to 15mm thick), hangs securely to prevent tipping and clogging. Space-Saving Tubing Routing: Unique U-shape guides tubing neatly along the tank edge, saving space and preventing kinks for smooth airflow. Installation & Maintenance Installation: Simply hang the U-tube securely on the tank rim—connect one end to your CO₂ regulator tubing and the other to a diffuser or bubble counter. Ensure all connections are snug. Maintenance: Gently clean the outside with a soft brush during water changes to remove buildup. Handle with care. Ideal Application Scenarios CO₂ Injection Systems for Planted Tanks Air Pump Tubing Connections in DIY Aquariums Under-Cabinet Tubing Management for Fish Tanks Compatible with Diffusers, sponge filters, Bubble Counters & Air Stones Package 4 x Glass U-Tube Each glass U-tube comes in its own bubble pouch, offering shock absorption and reducing shipping damage. Safety Tips Handle with Care: Made of glass—always handle gently during setup, cleaning, and storage. Use a Check Valve: Highly recommend adding a check valve between the regulator and U-tube to prevent water backflow. Inspect Before Use: Check for any cracks or chips before use. Do not use if damaged. Ingredients 304 Stainless Steel