| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | aquarium cycling | Norway | Viewed as an essential step before introducing fish to prevent the stress and potential harm of ammonia and nitrite spikes | 1 |
| 2 | aquarium equipment | Norway | Aquarium equipment is less commonly used due to the abundance of natural cold water sources which can be used for fish habitats. | 1 |
| 3 | aquarium size | Norway | Preference for larger aquarium sizes to create visually striking displays and provide a stimulating environment for the fish. | 1 |
| 4 | aquarium water change frequency | Norway | Regular water testing is prioritized, and water changes are performed based on actual need, which may result in longer intervals between changes. | 1 |
| 5 | aquatic plants | Norway | Aquatic plants are utilized in sustainable environmental practices, such as the use of reed beds for wastewater treatment. | 1 |
| 6 | fish tank decorations | Norway | Emphasize minimalist and functional design | 1 |