Change water:
(1) Under normal water exchange conditions, especially in hot summer, it is only necessary to gently suck out the feces and dirt at the bottom of the fish pond (tank) together with the old water every day with a hose to remove the dust and floating feces on the water surface, and then slowly inject isothermal new water along the wall of the pond (tank) to keep it. This method of changing water is not easy to hurt fish, simple and safe, and is most suitable for family fish tanks or small ponds.
(2) Partial water exchange is mainly carried out in two situations. In one case, in the hot summer and early autumn, the feed water in the fish pond (tank) has been changed for several days, but the water turns green quickly (due to a small amount of feed), and the water quality is still clean. Therefore, in order to prevent goldfish from scalding their tails, all the goldfish in the pond (tank) can be fished out, and then the water in the pond (tank) can be rotated into a spiral shape, and the pond (tank) can be put to rest for a while.
(3) Completely changing water This water changing method is often a combination of turning over the pond (tank) and selecting young or adult fish. It is often used because the water quality is seriously deteriorated or the moss is too long and the fish is too dense.
Feeding:
The feeding time of goldfish, whether it is live feed or artificial feed, must master the following principles:
1. The feeding frequency is only 1-2 times a day, and each feeding amount should be eaten within 1-2 hours. The feeding amount of species with normal weather and water quality and strong vitality can be increased appropriately.
2. Feeding time should be as early as spring and summer, usually around 6-7 am, when the sun begins to shine and the fish ponds (tanks) begin to feed. Feeding time can be delayed in late autumn and winter, usually around 7-8 o'clock, and even delayed to 10 in winter. But don't eat too much at night. Even if the fish are obviously foraging, it is best to feed them in small quantities around 3 pm. 1 1 month later, the water temperature dropped obviously, and the appetite of goldfish decreased, especially at night.
3. With the growth of goldfish, the food intake should be gradually increased appropriately, but it should not be blindly fed, especially artificial feed, which should be strictly controlled. In family fish farming, the feed can be divided into 1-2 times a day to avoid excessive feeding at one time, accumulation of ponds (tanks) and deterioration of water quality.