Suitable for 3-5 Gallon Aquarium: Submersible Betta Aquarium Heater is the perfect way to ensure the temperature in your fish water aquarium is at an optimal level for comfort and well-being of your pets.Ideal for aquariums of 3 -5 gallon capacity, this 25 Watt Aquarium heaters are a great way to keep your fish happy, healthy, and alive. The way to measure heater in watts for your aquarium requiring: Watt = (tank length * width * water height) / 1000 * 2. Durable and Shatterproof Construction: Made of high-strength plastic, sandy quartz filling and high-grade alumina ceramic heating system, its durable construction is shatterproof, waterproof and explosion-proof. Easy to install and simple to attach this aquarium heater to your aquarium via suction cups. Smart Thermostat Design: Fully submersible aquarium heater operates in intermittent duty mode. it is incredibly efficient and provides complete and even heat distribution, with no hot or cold spots. Fully Automatic Temperature Control
