Anjon Pond Ventilator De-Icers

Anjon Pond Ventilators keep a circular opening in the pond surface during freezing weather so harmful gases can escape and oxygen can enter — critical for overwintering koi and goldfish. The 100-Watt model handles most backyard ponds; the 300-Watt unit is built for larger ponds or harsher climates. Both float on the water and cycle on automatically as temperatures drop.

Key Features

• Automatic temperature-controlled operation — runs only when needed
• Floats on the pond surface to keep a circular air hole open during freezing weather
• Allows harmful winter gases (CO₂ and ammonia) to escape and oxygen to enter
• Essential overwintering equipment for koi and goldfish ponds in freezing climates
• 100-Watt unit for standard backyard ponds; 300-Watt for larger ponds or harsh climates

Specifications