Connecting Silicon Tubes are sometimes caught between the aquarium and lighting equipment, causing blockage of CO2 and air flow. In order to avoid this problem, Joint Glass is developed to insure proper supply of CO2. Be sure to choose the correct size which corresponds to the aquarium edge. Joint Glass is the connection parts for preventing silicone tube bent at rim of tank. Please choose size depending on thickness of tank or connecting situation of silicone tube. JG-007 is for Pollen Glass or TYPE-2, and JG-008 is for Pollen Glass TYPE-3, Pollen Glass Large or Pollen Glass Beetle. Application Guide: Article Code Item Size Application (glass thickness) 102-701 JG-001 11mm 5~6mm 102-702 JG-002 18mm 8mm 102-703 JG-003 22mm 10~12mm 102-704 JG-004 31mm 15mm 102-707 JG-007 12mm/210mm Height 6mm 102-708 JG-008 50mm/160mm Height 15mm
