Tetra Pond De-Icer Cat. No. DP-Tet26429	$69.50
Winter Survival Solution for Fish. Keeps a small area of the pond ice-free, allowing harmful gases caused by decaying matter and fish waste to escape through the opening. Effective to -200F. Thermostatically-controlled; 300 watts. 15’ cord. Use one de-icer for every 150 sqft pond surface. 3-year manufacturer’s warranty.