ADA KUMU Ryuoh Stone

ADA KUMU Ryuoh Stone

  • Natural Stone with dark colour
  • From the ADA KUMU series
  • Riff-like sturcture
  • Slight impact on water
  • Ideal for aquarium and terrarium layouts
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The ADA KUMU Ryuoh Stone from the KUMU Layout series is a high-quality aquarium stone that impresses with its cool colour and pointed shapes. The natural structure of the stone is reminiscent of a reef and brings an authentic underwater landscape to any aquarium. With a size of 30 to 80 mm, the Ryuoh stone is versatile and can easily be combined with larger stones to achieve an aesthetically pleasing design.

This stone has a high influence on the total hardness (Effect TH High) of the water and a medium influence on the pH value (Effect pH Medium). This can be counteracted with regular water changes. The pointed and angular shapes of the Ryuoh stone also provide interesting structures for aquarium inhabitants that like to hide.

The KUMU series is not only suitable for use in small glass display cases as paludarium decoration material, but also as a versatile design material for optimising compositions and refining scenic arrangements in natural aquariums.


  • High-quality natural stone with a cool colour
  • Natural structure reminiscent of a reef
  • Size variety from 30 to 80 mm for flexible design
  • Can slightly increase water hardness
  • Ideal choice for natural and appealing aquarium design



Aqua Design Amano (ADA) is the premium brand in aquascaping and Nature Aquaria. The company was founded by Takashi Amano, who applied the elements of the Japanese art of gardening to planting and decorating aquaria. For Takashi Amano, clearly the focus is on creating especially attractive habitats with his Nature Aquaria and aquascapes. The products manufactured by Aqua Design Amano (ADA) are of a very high quality, they complement the overall effect such a Nature Aquarium has on its contemplators, and they complete the artistic impression of the layout.

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