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How to dig concrete rings into the bottom of a pond for wintering fish? Silt and water get in the way. How much silt can accumulate, what does it consist of, how much oxygen is needed for its processing by an aerator? So, we have a pond with concrete walls and a clay bottom. To dig a concrete ring into the bottom of the pond, you must first lay dornit (300-400) on the bottom of the pond, sew it together, sprinkle with sand. In the place where you plan to install the concrete ring, cut the dornit, put the ring and remove the soil from under it, gradually lowering this concrete well. I recommend this method of wintering fish only for ponds with shallow depth, after all, there will be an oxygen-free zone at the bottom of the pit. You will have to use an aerator at the bottom. How does fish winter? In winter, fish stop feeding, gather in the depressions of the bottom (sturgeon, carp, catfish) or bury themselves in the silt (crucian carp, tench, gambusia, etc.) and go into torpor (hibernation), surviving unfavorable conditions with minimal expenditure of accumulated reserve substances. A wintering pit is a place for fish to accumulate in winter. Usually, fish of the same species concentrate in pits, which provides the best wintering conditions. Pond construction training: https://www.vodoemov.online Hurry to sign up, places are limited. About me: I have been building ponds for over 20 years. Candidate of biological sciences. I have built over 600 ponds. I teach at landscape design schools and on my YouTube channel. Our works: Website: http://vodoem.su/?utm_source=youtube Yandex Zen: http://zen.yandex.ru/id/60dcb5307b48e... Get advice: Phone: +7-903-192-22-99 WhatsApp: https://api.whatsapp.com/send/?phone=... #pond #reservoir #plot #fish