JBL Aquarium accessories Proflora Co2 Taifun Safestop

Water backflow preventer for CO2 fertilisation systems. It stops water from the aquarium flowing back into the CO2 technical equipment (non-return valve). Very easy to install: cut the CO2 hose and insert the backflow preventer between the two ends (the arrow points towards the aquarium). Safety: tightening nuts prevent the CO2 hose from detaching. For CO2 hoses with a Ø of 4/6 mm. Contents: 1 water backflow preventer for CO2 systems, with tightening nuts for hose.