Since the temperatures are beginning to drop here in north Georgia I have started to research and think about how my koi and pond will survive the coming winter. Fall is not the time to ignore the pond and is a great time to enjoy the fish since they look their best. Fall is also a great time for planting evergreens and doing maintenance on landscaping around the pond. Last winter we had several days of snow and sub-freezing temperatures, so preparation is warranted.
Falling Leaves
The beauty and shade of the bradford pear tree quickly turns to an ugly mess of leaves all over my yard and in my pond. I have a net to keep the leaves from falling in the main pond but some will likely fall into the upper pond so need to cover it. My skimmer should take care of any debris or leaf parts that manage to get through the net. I am thinking I may put on a second net loosely over the main net so I can pull off the leaves easily.
Bacteria
Microbe Lift makes a fall bacteria strain that continues to provide sustained biological activity even in water temperatures under 40 degrees. I should go ahead and get some now since I do not know when that will occur.
Sub Freezing Air Temperature
Fortunately here in the south we get few days below 32, and even fewer with snow. I need to research water heaters vs use of a thermal tent made of plastic. I will keep my pumps running until water temp drops below 38. My aerator should prevent water freezing over completely , supply oxygen needed, and circulate water to increase overall warmth. I am concerned about the koi dying at water temps below 34 degrees since ice may form on their gills. I have a water thermometer to monitor.
Aeronomas Alley
There are some bad bacteria that thrive in the temperatures between 45 and 55 degrees while the koi are usually dormant and their immune systems are depressed. I need to learn more about prevention and how to spot problems. I have removed my bog and will try to keep the pond free of debris where these bacteria can thrive.
Algae control
I have placed a barley bale in my filter to see if it will help fight algae now that the temps are getting cooler. I will update effectiveness later on. Currently I have clear water due to use of Algaefix.
If you have any Fall or Winter pond tips, please share them with me. Use the comments below or send me an email on the contact page.
