Suitable for 3-5 Gallon Aquariums: The Submersible Betta Aquarium Heater is the perfect way to ensure the temperature in your fish water aquarium is at an optimal level for the comfort and well-being of your pets. pets. Ideal for 3 to 5 gallon capacity aquariums, these 25 watt aquarium heaters are a great way to keep your fish happy, healthy and alive. How to measure heater power in watts for your aquarium: Watts = (tank length * width * water height) / 1000 * 2. Durable, unbreakable construction: made of high-strength plastic, sand quartz filling and high quality aluminum oxide ceramic heating system, its durable construction is shatterproof, waterproof and explosion-proof. This aquarium heater is easy to install and secure to your aquarium with suction cups. Smart Thermostat Design: The fully submersible aquarium heater operates in intermittent duty mode. It is incredibly efficient, providing full and even heat distribution with no hot or cold spots. Fully automatic temperature
