What to do if the Tetra Submersible Heater is not working
The Tetra Submersible Heater and Tetra HT Submersible Heater are designed to automatically heat up your fish tank water to a range of 76°F to 80°F (or 24.5°C to 26.5°C). If the device does not appear to be working as intended, or at all, then you can take a look at this troubleshooting article here at Aquarium Blueprints. … Read more