There are bubbles all over our pond.
we moved into our house three and a half years ago and have enjoyed the pond which was in situ. Newts live happily in there and we had loads of dragonflies emerging last summer. This spring we have noticed bubbles all over the pond. We haven't had them before. Does anyone have any suggestions as to what is causing them? Are they dangerous to the wildlife? What should we do about them?
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