Maintain a stable and healthy environment for your aquatic pets with this compact and efficient Aquarium Heater, designed specifically for small fish tanks measuring 30-40 cm. Crafted from high-quality quartz with a durable double-seal design, this mini heater ensures safe and reliable operation for both freshwater and saltwater aquariums. Key Features: · Compact Mini Heater Design: Measuring only 12.5 cm in length and 1.8 cm in diameter, this small-sized aquarium heater fits neatly into smaller tanks without taking up much space. · Premium Quartz Construction: Made from high-quality quartz material with an advanced double-seal structure, providing excellent durability and safety during continuous use. · Automatic Temperature Control: Pre-set to maintain a stable water temperature at approximately 78℉ (25.5℃), eliminating the need for manual adjustment and ensuring optimal comfort for tropical fish. · Easy Installation: Can be mounted vertically or horizontally inside the tank using two included suction cups for secure attachment and convenient placement. · Fully Submersible Design: Requires 100% submersion underwater, delivering consistent and gentle heating without hotspots or risks to aquatic life. · Power Options: Available in 25W or 50W models to suit different aquarium sizes and heating needs. · Suitable for Freshwater and Saltwater Aquariums: Provides a reliable and consistent warm environment to promote the health and well-being of tropical fish. Specifications: · Item Name: Aquarium Heater · Main Material: Quartz · Power Options: 25W / 50W · Voltage: 110V-120V (US), 220V-240V (EU) · Size: Length 12.5 cm, Diameter 1.8 cm · Suitable Tank Size: 30-40 cm small fish tanks Package Includes: · 1 x Aquarium Heater with two suction cups for easy mounting This aquarium heater combines a compact size with advanced safety features and reliable temperature control, making it an essential accessory for maintaining a healthy and comfortable aquatic habitat. Its durable quartz body and efficient heating capability ensure long-lasting performance, providing peace of mind for aquarium enthusiasts.