Dennerle CO2 Diffuser - Ultra

For fine CO2 diffusion

€ 16,99

(Price shown includes 20% VAT. - Excludes delivery costs)

Size: L

Delivery by Tuesday, 04 April if you order by Monday at 13:30.

Only 8 items in stock

Free shipping to Austria from € 49,90.
Information regarding shipping and returns

Features & Advantages

  • For highly effective CO2 diffusion
  • Also suitable for bio CO2 systems
  • Made of transparent acrylic
  • For hoses 4/6 mm
  • Ultra-compact shape

Item no.: DEN-104245, Content: 1 Pc, EAN: 4001615032390


Dennerle has launched a series of state-of-the-art CO2 diffusion devices on the aquarium market under the name “CO2 Diffusor Ultra”. The diffusers are made of transparent, unbreakable acrylic. This makes them considerably safer to use than conventional glass diffusers and, for example, also ideal for children's aquariums.

Thanks to their ultra-compact shape, they can be installed "invisibly" in the aquarium with the enclosed suction cup. But even when in the field of vision, they do not intrude thanks to their attractive appearance.

The newly developed membranes are made from a special sintered material with extremely small pores. The resulting nano-atomisation 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 Ultra CO2 diffusers can be combined with all common CO2 systems, e.g. the Dennerle one-way 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 ideal for bio CO2 systems.

The hose connection fits all standard 4/6 mm CO2 hoses, e.g. the Dennerle CO2 special hose.


  • Ultra S = 140 x 12 mm for aquariums up to 100 litres in volume
  • Ultra M = 140 x 17 mm for aquariums up to 200 litres in volume
  • Ultra L = 140 x 23 mm for aquariums up to 400 litres

Set includes:

  • 1 x diffuser
  • 1x suction cup

Our expert Oliver Knott recommends:

Mount vertically in the aquarium for a few hours before use so that the diffuser fills with a little water.

Brands (Manufacturers): Dennerle

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Customer Reviews

1 English review written for Dennerle CO2 Diffuser - Ultra

6 customer reviews in all languages

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15 reviews
1 customer review in English
6 customer reviews in all languages

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