Tetra Pond Rock De-Icer 

Toxic gases caused by decaying matter and fish waste can become trapped under the ice. TetraPond® De-Icer helps release harmful pond gases by keeping an area of the pond ice-free.

Features:

• Releases harmful pond gases
• Energy-efficient thermostat control saves energy costs by shutting off power when not needed
• Effective to -20°F (-18°C)
• Natural stone finish
• 300 watts
• UL approved
• 15 foot electrical cord
• Three year limited warranty