BioBudsanswered grow question 4 years ago In this stage, when soil is dried out up to an inch from the top, just slightly moist under this, you just take a cup of water (35cl) and pour this only in the circle around your seedling and wait 3 days. After this again. When plant is 5 cm, maybe one and half to two cups... Way too much water. Dont water the soil (you did this at the start), just water the plant.