Aquatop Premier Glass Heater with Protective Guard Submersible Fish Tank Heater - 100 Watt

• Fully submersible
• Built-in external guard to greatly reduce accidental breakage from mishandling
• Can handle aquariums up to 25 gallons
• Temperate range: 68-93 degrees fahrenheit
• Adjustable temperature dial
• Suitable for fresh and saltwater use