Resistant to rust and corrosion — This aquarium heater is made of high quality anti-explosion quartz material, which is sturdy, rustproof and corrosion resistant. 26 °C / 78 , 8 °F Thermostatic design — This aquarium heater adopts double metal silver plated contact temperature control and internal fixed temperature setting process, which has strong temperature sensitivity and small temperature error. With strong suction cup — This aquarium heater with strong suction cup, which can firmly fix the heater on the tank and stay stable for a long time. Low electricity consumption — This heater for aquarium has low electricity consumption of 25W, which with stable characteristics and high reliability. Mini Size Design — This aquarium heater can lower the water level using, which is small and short, portable and le ggero.