Soil

The soil in Nanner's pot looks a little weird. It has like a white crust film like thing on the top of the soil. It looks odd. I sometimes want to change the soil and put new soil in the pot. However i don't know if and how that would affect the plant. I have a hunch that the white stuff is from the miracle grow. It may just be some of the minerals in the blue water that never seeped into the soil. I dont really know, that is just my guess. I will figure it out later and keep watching it.