sand was mined here for the construction of a bypass route around the city and a bridge over the sozh riverd it for commercial fishing and organizing paid amateur fishing. at the end of winter, certain frost phenomena form on lakes, reservoirs, and rivers, that is, there is not enough oxygen in the water. to... the fish does not die, we need to break the ice, because through such thick ice, ultraviolet radiation does not reach the sun, and microorganisms, algae do not produce oxygen, we sawed through the pellet, this is, in principle, enough for half a hectare of water so that oxygen starvation disappears, today we measured the oxygen content in this reservoir about 8 mg per square meter, we periodically clear the snow, freeing the ice cover from snow, so that ultraviolet light would get into the water again, she simply began to peck on an empty hook, and the sizes reached carp up to 15 kg, there were 100, 200 fishermen a day, everyone was just in shock, i don’t know why, or due to the fact that the food supply in the reservoir was disrupted, the fish got hungry, maybe, i don’t know, the go