Quote Originally Posted by Islab View Post
It seems that it's because it's more likely to keep mold from growing since it's resistent to it - I've known eco-earth to have this mold problem.
It only molds if poorly maintained. At least once per week it should be mixed up and misted to remoisten the substrate and prevent mold. Most mold that grows on Eco Earth is harmless. The white mold feeds on decaying matter. Just remove the mold and keep the soil mixed up well.