What is a thermostat?
A thermostat controls temperature by activating or deactivating a heater based on a set target value.
Why thermostats matter
- Prevent overheating
- Improve temperature stability
- Protect fish from sudden temperature changes
Built-in vs external thermostats
- Most heaters include built-in thermostats
- External controllers add an extra layer of safety
Thermostats are critical in tanks with sensitive or valuable fish.