Castle Dawn Aquatics CO2 Glass U-Tube 15 mm

The Castle Dawn Aquatics Glass CO2 U-Tube 15 mm is a simple yet elegant solution for routing airline or CO2 tubing over the rim of your aquarium. Designed for use with standard 6 mm (1/4") airline tubing, this U-Tube prevents kinks and creases, helping you maintain a clean and professional aquascape.

Made from strong, clear glass, it blends seamlessly with any setup and is ideal for both rimless and framed aquariums.

Key Features and Important Notes:

• What’s Included:
  – 1 × 15 mm Glass CO2 U-Tube
  ⚠️ Airline tubing and check valve not included.
• Tubing Support Without Kinks:
  Guides airline or CO2 tubing neatly over aquarium rims without creasing.
• Minimal Visual Impact:
  Transparent glass design blends into your aquascape.
• Perfect for Rimless Tanks:
  10 mm bend width fits most rimless aquariums without obstruction.
• CO2 & Air Pump Compatible:
  Works with both CO2 systems and standard air supply setups.
• Standard Tubing Fit:
  Compatible with 6 mm (1/4") standard airline tubing.
• Easy Installation:
  Quick and simple to mount, rinse, and connect to existing setups.
• Warranty:
  1‑Year Warranty (T&Cs apply).