Fluval 25 Watt Compact Aquarium Heater is an automatic, submersible heater for indoor aquariums. Requiring no manual temperature adjustments, it is designed to reach and maintain the pre-set temperature of 26? C (78? F). The heaters exterior is made of a tough polymer that will not crack or break like traditional glass sleeve heaters.

• Unbreakable Polymer Construction
• Safe for Plastic or Glass Aquariums
• For Fresh and Saltwater Aquariums
• Requires No Manual Temperature Adjustments
• Ideal for Aquariums Up to 6.6 Gallons