I must have gotten a bad bag of potting soil or something.... several days after transplanting I have what appears to be some sort of fungus growing on top of my dirt. It's white and fluffy (almost like spider webs)... it subsides as the soil dries out but comes back after watering. It's only on the one's that were transplanted, the other pots/dirt look fine. My plants still look healthy, but I don't want to take any chances. Anyone have any experience with this? Will it kill my plants? What should I do... if anything? Thanks in advance for any input!