【100W AQUARIUM HEATER】 The aquarium heater provides high-performance aquarium heater for aquariums of all sizes. 100W is suitable for 50L-100L of water, suitable for fresh water and sea water, suitable for all kinds of fish, turtles and plants. 【ADJUSTABLE TEMPERATURE】The adjustable temperature range of this aquarium heater is 18°C (64.4°F) to 32°C (89.6°F). Features an adjustable knob on the top for easy temperature adjustment. It is also equipped with an adhesive thermometer so you can track the temperature of your aquarium. 【Precise Temperature Control】Aquarium heater adopts high-strength electric heating wire to maintain a constant temperature, which can automatically maintain the water at the temperature you set. Keep your aquarium at the right temperature with this efficient, accurate and reliable temperature heater. 【Waterproof and Thickened Design】The aquarium heater is made of waterproof components and thickened quartz glass, waterproof, explosion-proof and shatterproof, very