OGgrowsanswered grow question 5 years ago the first weeks of the automatic plants are very important, they need at least 18 hours of light until harvest and a humidity of 70% -80% to grow well in the first weeks. it can be several causes, it can be seen that they are fertilized, it can be a root problem, you can be giving too much water in each irrigation and the roots without air circulation block and the plant growth too. try to let the substrate dry well in the interval of each watering, apply a root stimulator. good luck mate 🙏🍀