In water culture, there is no need to change water too often. Usually, in spring and autumn, you can change water every week or so. In summer, when the temperature is high, you can change water more frequently. You can change water every five days or so. And winter is very low cold, can extend the time for water change, generally 10 days to half a month for water change. In normal times, when the water becomes less, it should be increased properly
1. Water quality: clean water shall be used during water change, and dirty water shall not be used. If possible, it is recommended to use rainwater or snow water collected at ordinary times. Tap water can also be used at home, but it should be kept for 1-2 days first.
2. Water level: in the process of hydroponics, it should be noted that the water level should not be too high. Under normal circumstances, the water surface should be about 1-2cm from the bottom of the seed ball. Do not exceed the bottom of the ball. If the water level is too high, it will increase the probability of rotten roots.
3. Method: when changing water for hyacinth, it is not allowed to pour water on the bulb. If there is water on the bulb of hyacinth for a long time, it is easy to get rotten.