Thank you I’ll have a look but It’s tricky because it’s very hot here some days@callingcolleen1 here who is in Canada covers her ponds nicely in the winter w/plastic and weighs the sides down so heat stays in. Perhaps this would work for keeping the smoke particles out of yours. She has many video's on her covers. Scroll down towards the bottom of this link and you will see one on her winter covers: https://www.gardenpondforum.com/threads/my-pond-runs-all-winter-zone-2-3.10570/page-98