Aquarium and pondwater temperature
|
| Temperature C |
| Temperature F | ||||
Type |
| Min | Ideal | Max |
| Min | Ideal | Max |
Koi* |
| 4 | 18 | 26 |
| 39 | 64.5 | 78.8 |
Pond* |
| 4 | 18 | 26 |
| 39 | 64.5 | 78.8 |
Coldwater aquarium* |
| 10 | 18 | 26 |
| 50 | 64.5 | 78.8 |
Tropical aquarium |
| 23 | 24.5 | 26 |
| 73 | 76 | 78.8 |
Discus |
| 27 | 29 | 31 |
| 81 | 84 | 88 |
Cichlid |
| 23 | 24.5 | 26 |
| 73 | 76 | 78.8 |
Fish only marine aquarium |
| 23 | 24.5 | 27 |
| 73 | 76 | 78.8 |
Reef aquarium |
| 23 | 24.5 | 26 |
| 73 | 76 | 78.8 |
* At temperatures below 12C/55F you should stop feeding your fish, and at temperatures above 12C/55F you should slowly start feeding again.
Temperature control is essential for the health of your fish. A surge in temperature can increase free ammonia levels, decreasing oxygen, and lead to high levels of bacteria that could lead to an unhealthy aquarium.