Marineland Precision Submersible Heater 50 watt

Youll love this heater.
Youre going to have it for a very long time.
Finally, a more reliable heater with groundbreaking safety features.

• Adjustable temperature dial
  Easy-to-adjust temperature dial sets temperature 1F with every click.
  
• High-visibility temperature display
  Easy-to-view sliding scale tells the exact temperature setting. Top dial view shows the setting from an additional location.
  
• Thermal switch
  Safety feature prevents heater failure during use. Heater automatically turns off as temperature rises above an internal pre-set level and turns back on when it cools down.
  
• Triac controller
  Switches heater on and off for superior performance and enhanced reliability.
  
• Mounting bracket
  Advanced mounting bracket securely attaches to glass and provides three window positions, allowing temperature display to be viewed from multiple angles
  
• Advanced heating element
  Flattened mesh heating element surrounds a mica core for superior heat transfer with enhanced durability
• For Aquariums up to 12 Gallons