| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | aquarium cycling | Germany | Commonly done using liquid ammonia or fish food to initiate the nitrification process before adding fish | 1 |
| 2 | aquarium decorations | Germany | May include detailed and realistic replicas of underwater scenes | 1 |
| 3 | aquarium size | Germany | Larger aquarium sizes are commonly preferred for keeping a variety of fish and creating a more natural environment. | 1 |
| 4 | aquarium water change frequency | Germany | Adhering to a strict schedule for water changes, such as every two weeks, is common practice to keep the aquarium ecosystem stable. | 1 |