Aquatop 100 Watt Submersible Glass Heater Part #GH-100
 
Features:
Fully Submersible
Easy to use temperature setting
Adjustable temperature with over-wind protection
Suitable for fresh and saltwater use
 
Specifications:
Tank Capacity: Up to 25 gallons
Power: 100W
Temperature Range: 68-93F
Dimensions: 1.25" L x 1.25" W x 10.0" H