How to change the water for water-grown plants, and how often is it best to change it?

How often to change the water for hydroponic plants has always been a question people care about. The frequency varies from plant to plant and from season to season.

In spring and autumn, the climate is pleasant and hydroponic plants grow at a relatively steady rate. Generally, change the water once every 20to30days. This is because in spring and autumn the water temperature is moderate and the dissolved oxygen content in the water is fairly stable. The plants' metabolic activity is relatively slow during this period, so there is no need to change the water frequently.

In summer, with the high heat, the dissolved oxygen content in the water drops rapidly. At the same time, plants grow faster and their oxygen consumption rises accordingly. Therefore, in summer it is recommended to change the water once a week. This ensures there is enough oxygen in the water to meet the plants' growth needs.

In winter, temperatures are lower and plants grow slowly. At this time, changing the water once every 10to15days is more appropriate. Because the water temperature is lower, the plants' metabolic activity slows down accordingly, and changing the water too often will have a certain effect on the plants.

Besides the season, the type of plant also affects how often you change the water. For example, some aquatic plants such as pothos (Epipremnum aureum) and spider plant (Chlorophytum comosum) have well-developed root systems and a relatively high demand for water. These plants need regular water changes to keep the water clean.

When changing the water, there are also a few things to keep in mind: first, clean the roots and the container to remove dirt and impurities from the surface; second, observe how the plants are growing and adjust the water-changing frequency promptly if anything seems abnormal; third, choose suitable water - generally speaking, tap water can be used after it has been left to settle.

The water-changing frequency for hydroponic plants needs to be determined according to the season and the type of plant. A reasonable water-changing frequency keeps plants growing healthily and makes our hydroponic plants even more beautiful.