Winter Fish Kills

THE FROG BLOG

Winter Fish Kills

The predictions for the coming winter call for harsh conditions and bitter cold.  In mild winters, in which ponds do not freeze over, the likelihood of a fish kill is lower than in cold winters.  When extended periods of bitter cold cause ponds to ice over, and especially if the pond becomes snow covered, sunlight penetration of the water will be greatly reduced, if not entirely eliminated.  The lack of sunlight reduces the oxygen produced which can result in a fish kill. 

Fortunately, there are things you can do to reduce the risk, such as controlling the growth of aquatic weeds and vegetation in your pond.  As vegetation dies, the dead matter falls to the bottom and begins to decompose.  The decaying organic matter removes oxygen from the water.  The more decomposing organic matter, the more oxygen will be removed.  Adding an aeration system is another highly effective, preventative measure.  The bottom bubbler aeration systems, such as the Vertex Pondlyfe system, add oxygen directly to the water and keep an area of open water in the ice.  The open water will allow for light penetration as well as the exchange of gasses.     

Winter fish kills can happen in any lake or pond, however, shallow ponds are most susceptible.  Fortunately, it is the optimum time to install an aeration system before the onset of winter to help protect your fish.  AQUA DOC offers free on-site consultations with our Aquatic Specialists to configure the right system for your unique pond and answer all of your questions.  Contact us to schedule your consultation today.  We look forward to hearing from you.

Here's to open waters!

~The Frogger Blogger