JBL PROFLORA CO2 TAIFUN SAFESTOP 
 
Water backflow protection for CO2 system
Prevents the water from flowing back out of the aquarium into the CO2 technology (check valve)
Very easy to assemble: cut the CO2 hose and insert the backflow protection in between (arrow points towards the aquarium)
Safety: lock nuts prevent the CO2 hose from slipping off
For CO2 hoses with Ø 4/6 mm
Package contents: 1 check valve for CO2 systems incl. hose securing