I have a 4 tray worm factory that has been operational for 7 months and is going pretty well. Two weeks ago I put some extra worms/bedding/food in a new plastic bin and now have this fungus? mold? growing. Can anyone tell me what it is and if it is harmful. Thanks for your help.

It can be seen at: http://www.gardensup.com/vic's%20pic.html