Discus Temperature: Ideal Water Temp
Ideal: 82-88°F (28-31°C)
The Discus is a tropical species. Aim for the middle of its range, around 85°F, and keep it steady — sudden swings stress fish more than a stable temperature.
You will need a heater to hold 82°F and up in most rooms — use roughly 3-5 watts per gallon plus a separate thermometer.
| Fahrenheit | 82-88°F |
|---|---|
| Celsius | 28-31°C |
| Sweet spot | ~85°F |
Frequently asked questions
What temperature do Discus like?
82-88°F (28-31°C), ideally around 85°F.
Does a Discus need a heater?
Yes — to reliably hold 82°F+ you need a heater in most homes.
More on this species: Discus full care guide · tank size · temperature · pH & hardness · tank mates