Prevent fish from floating their heads in summer
First, the prediction of floating head
1. Summer daytime light is strong, the temperature is high, the evening weather. Sudden thundershowers or southerly winds blow during the day, the water temperature is high, and suddenly turn to the north wind at night, the water temperature drops rapidly.
two。 Continuous rain, low pressure, muggy, weak wind, foggy weather.
3. After a long time of sunshine and no rain, the fish ate vigorously, the water color was thick, and the weather suddenly changed.
Second, the rescue of floating head,
1. Add new water to increase dissolved oxygen, improve water quality and increase the range of fish activities.
two。 Turn on the aerator to stir the water body through the aerator, increase the contact surface between the water and the air, and increase the amount of dissolved oxygen in the water. When the water temperature is 25 ℃ ~ 30 ℃, it is not dangerous to add oxygen to the fish floating head for 2 to 3 hours, but when the water temperature is above 30 ℃, the turtle floating head must be turned on after 1 hour.
3. Chemical oxygenation if the floating head of fish is more serious, while turning on the aerator, we should also use some chemical agents to make the water produce oxygen, mainly using ammonium persulfate and calcium peroxide.
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Introduction of turtle seedlings and culture methods in autumn
Because the turtle seedlings from one environment to another new environment has a period of adaptation, its cycle is 1 month to 2 months, then gradually normal, and the tortoise is a temperature-changing animal, after entering autumn, with the gradual decline of the temperature, the tortoise also grows slowly. The advantage of autumn introduction is to seize the opportunity of slow growth of the tortoise and let it adapt to the new environment. After the beginning of spring, when the temperature rises, the tortoise immediately enters the growth state, and there is no need to adapt to the new environment. In general, the seedlings introduced in autumn enter the growth period 1-2 months earlier than those introduced in spring.
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New technology of clearing pond and removing wild land
At present, the commonly used pond cleaning drugs are quicklime, tea meal, bleach, bleach, trichloroisocyanuric acid and so on. 1. Quicklime clear pond quicklime (CaO) produces strongly alkaline calcium hydroxide when exposed to water, which makes the pH (pH) of the pond water rise sharply to 11: 12, so it can kill wild fishes, enemy organisms and various pathogens. two。 Tea meal Qingtang tea meal is a round cake made from the remaining residue of Camellia oleifera seeds after pressing oil. Usage: beat the tea meal into small pieces and use
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