Aquarium Heating Rod, 100W Glass Fish Tank Submersible Heater with Temperature Control Range (EU Plug). Automatic Constant Temperature Design—This fish tank heating rod features an automatic constant temperature system, allowing temperature adjustment between 20°C–34°C (68°F–93°F), with a precision constant temperature range of approximately ±1°C. Sensitive Temperature Controller—Equipped with a sensitive temperature sensor and overheating protection device, this aquarium heater ensures even and stable heating. Features high-strength heating elements for reliable performance and long service life. Anti-Rust and Corrosion Resistant—Constructed from high-quality explosion-proof quartz glass, this heater is durable, rustproof, and resistant to corrosion. Includes Strong Suction Cup—The heater comes with a robust suction cup to securely attach and stabilize the unit inside the tank. Warm Prompt—Maximum recommended submersible water depth is 120cm. This product is suitable for both freshwater and saltwater aquariums. Product Color: As Shown. Specification: 100W. Condition: . Item Type: Aquarium Heating Rod. Material: Glass. Wattage: 100W. Temperature Control Range: 20°C–34°C. Constant Temperature Length: Approx. 25cm / 9.84in.