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For highly effective CO2 dissolution through nano atomization


  • Controlled supply through integrated bubble counter
  • Also suitable for Bio CO2 systems
  • Made of high-quality, transparent acrylic
  • Ultra-compact form – can be installed “invisibly” in the aquarium
  • With suction holder
  • For hoses 4/6 mm

Mount vertically in the aquarium for a few hours before use so that the diffuser fills with a little water.
Dennerle offers a series of ultra-modern CO2 addition units under the name “CO2 Diffusor Ultra”. The diffusers are made of transparent, break-proof acrylic. This makes them considerably safer to handle than conventional glass diffusers and also ideal for children’s aquariums, for example. Due to their ultra-compact shape, they can be installed “invisibly” in the aquarium using the suction holder provided. Thanks to their attractive appearance, however, they are not disturbing in the visible area either. The newly developed membranes 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.The CO2 Diffusers Ultra can be combined with all common CO2 systems, e.g. the Dennerle disposable and reusable systems Carbo START, Carbo POWER and Carbo NIGHT. 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. The CO2 Diffuser Ultra S is suitable for aquariums up to 100 L and therefore very popular especially for nano aquariums. The model M supplies aquariums up to 200 L, the model L aquariums up to 400 L. Product name Dimensions (H x W) For aquarium sizes
3237 CO2 Diffusor Ultra S 140 x 12 mm < 100 L
3238 CO2 Diffusor Ultra M 140 x 17 mm < 200 L
3239 CO2 Diffusor Ultra L 140 x 23 mm < 500 L
SKU: 4001615032383 Categories: , Brand:
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