Water circulation and aeration year-round is vital for a healthy pond.  During warm seasons, an aerator will maintain peak oxygen levels for fish and enhance the biological performance to reduce organics that feed algae and maintain crystal clear water. In the winter, aerators are most effective and efficient method in ventilating harmful gases out of the pond.

Complete Aquatics EnhanceAir™ PRO 1&2 Diffuser Assembly 
8” Diffuser Ring & Base Plate

Diffuser Placement:
In warmer months, the best place for the diffuser is in the middle of the pond near the deepest point to circulate highly oxygenated surface water down into the depths of the pond.  However, in winter the pond’s surface water is super-chilled from the cold air and should not transfer to the bottom of the pond where the fish are. For this reason, it is extremely important to move the aeration diffuser to an upper shelf level near the pond surface in colder weather.  Place the diffuser so that it is 6” to 8” below the water surface. This will keep the super-chilled water from circulating to the bottom of the pond as well as create greater turbulence at the water surface to keep an area from freezing. Note that the ice all around the opening is thinned and will not support weight, so never walk or step on the ice. When the pond is used for recreation in the winter, clearly post signs at or mark the location of the diffuser and thin ice at the surface to warn any individuals on the ice.