A simple and reliable nano aquarium heater with inline controller. This heater comes in two sizes, 25W and 50W:
- 25W is suitable for a 3-8 gallon aquarium
- 50W is suitable for a 9-17 gallon aquarium
- Temperature control dial is placed outside of the aquarium
- Made with heat and shatter proof glass
- Heating element is about 12cm (4.75") long with a 2cm (0.25") diameter for both sizes.