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Fluval Edge Aquarium Heater

The Fluval 25 watt compact aquarium heater is an automatic, submersible heater for use in indoor aquariums. Without any adjustments needed, it is designed to reach and maintain the set temperature of 26ºC (78ºF). The exterior is made of a tough polymer so that it will not crack or break like traditional glass sleeve heaters. The heater is ideal for aquariums up to 6.6 gallons (25 L) and can be used in fresh and saltwater tanks.