In order for the seedlings to grow healthy and strong, it is necessary to organize proper watering.
Experienced gardeners know what kind of water to use to water their plants.
Plants most easily absorb water with a low content of salts and other impurities.
Water your seedlings with soft water - river, lake, rain or melted water.
If this is not possible, then you can use regular water, which must be prepared in advance. That is, the water must be left to stand for two days.
To do this, pour it into an open container to release the chlorine.
However, this will not help get rid of salts, so you will need a filter.
An alternative option may be pure bottled water.