Discover the JBL Protemp E500 External Heater, the ultimate solution for maintaining the perfect water temperature in your aquarium without cluttering the inside. This innovative in-line heater seamlessly integrates into your external aquarium filter, ensuring an even and efficient temperature distribution.

• Easy Installation: Simply cut the hose of your external filter, insert the E500 heater, plug it in, and set your desired temperature effortlessly.
• Precise Temperature Control: Enjoy accurate temperature regulation with +/- 0.5 °C precision and a switching interval of just 1.0 °C, complemented by an LED display for real-time monitoring.
• Versatile Compatibility: Comes with interchangeable, screw-on hose connections suitable for 12/16, 16/22, and 19/25 mm hoses, making it adaptable to various aquarium setups.

Why buy this product? The JBL Protemp E500 not only eliminates the need for an internal heater, allowing for a pristine aquarium environment, but also enhances fish health by providing the ideal temperature range for tropical species. Experience unmatched convenience and efficiency for your aquatic pets!