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How do you make a garden pond winterproof and how do my fish survive the winter? Just follow our 3 golden rules!Only a clean pond can survive winter Whoever enjoys a pond in his garden often asks what happens to my fish when the pond is frozen over. Do my fish still get enough oxygen?
Small ponds need a total cover made of transparent material so that snow does not restrict the lighting conditions under water. The pond must remain open on two sides so that oxygen can penetrate below the ice surface. These pages must not freeze, which means you have to tap them again and again if necessary.
But before you winterize your garden pond, there are a few rules that need to be followed.
Rule 1 - clean water
Old plant stems and dead plant parts as well as fallen leaves must always be removed. Otherwise, putrefaction gases are created in the water, which “overturn” the biological balance. Leaves and mud on the bottom of the pond must also be removed.
Rule 2 - add fresh water
Next, some of the water has to be exchanged for fresh water, because only clean water allows the fish to survive the winter in a healthy way.
Rule 3 - leave fish alone
Too often breaking up ice disturbs the calmness of the fish, so if you only break a slightly larger hole it will do you better.
Styrofoam rings that float on the water and are available from specialist dealers also keep part of the pond free of ice.