all my plants have been developing mold on the top layer of the soil? I have been removing the mold but it keeps coming back and the soil never really dries out. the plants themselves seem somewhat healthy but also dehydrated. I'm very new to plants and have been searching everywhere but I haven't found SQUAT about this. does anyone know what to do or why this is happening? I've been watering my plants the same and juat got some new plants and now they all have this problem.