• HEAT RESISTANCE GLASS • ACCURATE TEMPERATURE • ENERGY SAVING • SUPERIOR DESIGN • FRESH & SALT WATER • FAST HEATING Fully automatic and adjustable aquarium heater for up to 75L. Water temperature is fully in consistent and heat is evenly distributed throughout. Easy to use even for novice fish hobbyist. • Automatically maintains temperature selected throughout the tank • Reliable and steadily built structure guarantees effectiveness • Temperature dial is easy to read and set • Special adhesive suckers and clip to keep heater in place firmly • Special glass tube is highly resistant against heat and shock • Visible ON / OFF indicator lamp • Totally submersible in tank • Suitable for tropical or marine tanks