Answer
What is a regeneration zone in a natural swimming pond?
The planted zone that cleans the water, hosting the bacteria and plants that keep it clear.
In short
The regeneration zone is the planted part of a natural swimming pond that cleans the water. Aquatic plants and the gravel they grow in host beneficial bacteria that take up nutrients, so the water stays clear without chemicals. It sits alongside the swim zone and is the heart of how the pond works.
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