ベランダや庭のビオトープ。バケツでも睡蓮鉢でも大きな庭の池でも、自然の循環で生体を生かして自然にまかすビオトープ。メダカ、ヌマエビ、タニシ、スネール、水草、マツモ、アサザ、ホテイアオイ。南北に長い日本列島の地域の特徴による違いなど語るクラブ
| Day | Members | Gain | % Gain | 
|---|---|---|---|
| April 28, 2024 | 6 | 0 | 0.0% | 
| February 15, 2024 | 6 | 0 | 0.0% | 
| December 31, 2023 | 6 | 0 | 0.0% | 
| November 17, 2023 | 6 | 0 | 0.0% | 
| October 17, 2023 | 6 | 0 | 0.0% | 
| September 17, 2023 | 6 | 0 | 0.0% | 
| August 19, 2023 | 6 | 0 | 0.0% | 
| July 17, 2023 | 6 | 0 | 0.0% | 
| June 22, 2023 | 6 | -1 | -14.3% | 
| March 20, 2023 | 7 | 0 | 0.0% | 
| March 04, 2023 | 7 | 0 | 0.0% | 
| June 18, 2022 | 7 | +1 | +16.7% | 
| March 20, 2022 | 6 | +1 | +20.0% | 
| February 17, 2022 | 5 | +2 | +66.7% |