High-Power Aquarium Heater 300W submersible fish tank heater designed for 26–53 Gal (100–200L) aquariums. Suitable for freshwater and saltwater use. The external sensor instantly cuts off power if water levels drop, providing maximum safety and preventing dry burning or overheating
Accurate PID Temperature Control Smart PID control technology keeps temperature stable within ±1°F, with a wide adjustable range of 65°F to 93°F (18–34°C). Ideal for larger tanks, breeding setups, and temperature-sensitive aquatic species
Premium Quartz Glass Tube Insulated, corrosion-resistant, and explosion-proof gray quartz glass tube ensures safe, long-term use in both freshwater and saltwater aquariums
Flexible Installation & Neat Appearance 360° freely rotatable suction cups with multiple mounting options allow flat placement. The 90° vertical cable design helps maintain a clean and professional-looking aquarium
Comprehensive Safety & Memory Features Includes auto shut-off when out of water, over-temperature alarm, load protection, and memory function to restore settings after a power outage, delivering safe and reliable performance
