The most technologically advanced aquarium heater available today, Fluval E200 Advanced Electronic Heater with VueTech technology delivers peace of mind thanks to several excellent features. Equipped with an intelligent digital microprocessor monitoring system with dual temperature sensors, this heater continuously monitors and displays aquarium water temperature, ensuring the safety and well-being of your aquarium inhabitants. Key Features • Continuously monitors and displays aquarium water temperature in real time • Intelligent digital microprocessor monitoring system with dual temperature sensors • Ensures the safety and well-being of your aquarium inhabitants • Precision temperature control allows settings in 0.5-degree increments • Integrated fish guard provides advanced protection • Slim profile mounting bracket • For aquariums up to 250 L (65 US gal) • For fresh and saltwater aquariums • 200-watt heater Other models available: -A771 Fluval E50 Advanced Electronic Heater, 50 watts, for aquariums up to 60 L (15 US gal) -A772 Fluval E100 Advanced Electronic Heater, 100 watts, for aquariums up to 120 L (30 US gal) -A774 Fluval E300 Advanced Electronic Heater, 300 watts, for aquariums up to 375 L (100 US gal)