The water change interval of ornamental fish is not fixed, and it will be affected by many things, such as temperature, filtration and dirt content. Usually, the higher the temperature, the easier the water quality is to rot, so it can be changed 3-4 days at ordinary times, and once a week in winter. In addition, a good filtration system of the fish tank, water can not be too frequent, half a month to change once is no problem. However, if there is a lot of dirt in the tank and there are residual baits in the feeding, it is necessary to change the water frequently to keep the water clean.
1. Water should be aired in advance: To change water in the fish tank, it is necessary to use aired tap water. If the tap water is not treated, it will contain trace chlorine, which is very harmful to the health of the fish. So usually to prepare a basin, after receiving the water into the sun, so that the chlorine volatilization.
2. Control the amount of water: Changing the water is not a one-time replacement of all the water, because after the fish adapt to the old water environment, too much new water will stimulate the fish body, causing it to get sick. Therefore, the amount of water needs to be strictly controlled, not more than one third of the total amount of water in the fish tank, less than one fifth is enough.
3. Change the water frequently when you are sick: Although it is not appropriate to change the water too frequently under normal circumstances, the situation of changing the water is completely different when the fish is sick. After the fish is sick, the bacteria in the tank increase, in order to provide a healthier growth environment, water should be changed every other day, and the amount of water can be about half, so as to reduce the number of bacteria in the water as soon as possible, which is very beneficial to the recovery of the fish.
