• Japanese aeration ring XRMXF for Koi carp ponds, designed to improve oxygenation and prevent oxygen deficiency in all seasons • Suitable for ponds, aquariums, filtration chambers, and suspended and fluidized bed reactors • No additional weight required, as the tube settles at the bottom by its own weight • No risk of injury to fish or Koi carp, as there are no dangerous supports • Excellent air bubble dispersion thanks to low internal resistance, with minimal clogging or wear • 5 mm thick hose, very strong and durable, easy to clean and maintain thanks to the plug-in system • Promotes the biological degradation process by increasing oxygen in the water, helping to convert ammonium into nitrite and then into nitrate • The ring remains at the bottom of the pond during operation, improving water mixing through fine bubbles • It is recommended to adjust the hose length and the amount of air supplied by the pump for optimal operation