Don't remove all the sludge

Pond · Autumn

Nick Peters · 3 October 2026

Een hand vol slib uit de filterbak, boven het troebele water in de kamer.

In an autumn service I deliberately remove only 60 to 70%. Vacuum out everything and you throw away the biology. Rinse filter media in pond water, never under the tap, and the sludge goes into the border. Below 10 °C the fish are in winter rest.

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