The JBL JBL ProFlora Taifun inline is a high performance direct diffuser for CO2. This practical CO2 direct diffuser saves a diffuser in the aquarium, a bubble counter as well as a check valve and due to ist unique functioning it also saves 20% CO2. The only prerequisite is the use of an external filter with a suitable hose connection. The direct diffuser needs to be integrated as close as possible to the external filter to extend the distance of the CO2 inside the hose as much as possible. A vertical mounting position ensures best readability of the bubble counter.JBL ProFlora Taifun inline CO2 Inline diffuser+ CO2 direct diffuser for the connection to an external filter+ as a result: no visible CO2 reactor inside the aquarium+ up to 20% reduction of CO2 usage+ modern cermaic PE hybrid membrane for uniform micro bubbles+ integrated bubble counter+ integrated check valve saves the CO2 system+ compatible with all external filters (take care of the hose size)+ 12/16 for aquarium sizes fr