It depends on many factors: plant species, weather, the structure of the soil, and the special care of each type of plant. There are plants that do not need much water (snake plant), or soil (orchid), or sunlight (Boston fern). Please do not hesitate to contact us for more consulting.
More importantly, you shouldn’t take out the soil which cover the root of the plants. Because it will affect the root and cause death to the plants. You can put the upturned planter upward in 24 hours making the plant’s root more secure to the soil. Moreover, you should check the water in the water container twice a week.