Winter Pond Maintenance
Keep your pond open this winter with an aeration system. It’s important to install an aeration system during the summer and fall months before winter arrives. Once the unit is installed, it can run through the winter, keeping your pond or lake open and aerated. Keeping the pond open will help keep oxygen in the water, attract water fowl and help prevent fish kills in the spring.
PondBuilder.com wrote a great article about the benefits of pond aeration through the winter:
In the northern climates this is a question that I hear quite often. Do I need to install fish pond water heater or pond aeration equipment? Let me begin by saying if you don’t have fish in your water garden it is not necessary to install either one. An argument can be made that one is more important than the other, however both can keep an area of the pond surface free from ice.
During the winter months your fish are still producing waste and CO2. Decomposition of the fish waste and any organic material during the winter produces harmful compounds that will rob the water of oxygen causing stress to the fish. If water toxicity levels get too high the fish could die. When the pond is not frozen the gasses escape through the surface. Thus it is essential to keep an area in your pond free from ice. Both a fish pond deicer and a pond aerator pump have positive and negative points, so let’s take a closer look at both.