Dennerle CO2- Diffusor ULTRA is a compact an elegant designed CO2 diffusor for aqauriums. The newly developed membranes of the Dennerle CO2 Diffusor ULTRA are manufactured from a special sintered material with extremely small pores. The resulting nano-atomization of the supplied CO2 ensures a highly effective and safe dissolution of this important plant nutrient in the aquarium. With the help of the integrated bubble counter, the amount of CO2 added can be easily checked at any time. An separate bubble counter is no longer needed. The Dennerle CO2 Diffusers ULTRA can be combined with all common CO2 systems. Due to the much lower operating pressure of approx. 0.3-0.5 bar compared to classic glass diffusers, the CO2 Diffusers Ultra are also ideally suited for bio CO2 systems. The hose connection fits all commercially available CO2 hoses with 4/6 mm, e.g. the Dennerle special CO2 hose.Dennerle CO2- Diffusor ULTRA+ controlled supply through integrated bubble counter+ also suitable for Bio