My plant is doing rather well for a first grow but lately I have noticed that the roots are reaching the top of the soil. I just added a thin layer of soil.
How old are the plants? It can happen if a plant is to big for its pot or the clone wasnt planted deep enough. More then likely plant pot size issues.What size plant how old and waht size pot you in?
It might just be that when waterin your just washing some aoil away from the base.Cover them back up dont worry about them and when watering go slow and around the edges more then right at the base. should be no issues