- Preset temperature of 76–78° F
- Slim, compact design
- Intended for aquariums up to 15 gallons
If you're looking for an easy-to-use heater for your betta fish tank or smaller aquarium, the Fluval P50 heater is a great choice. It is fully waterproof and is designed to be completely shatterproof, which keeps both your tank and livestock safe. Because it is compact and doesn't take up much room, it is easily positioned to fit almost anywhere in the aquarium.