Plants are fine but i stumbled upon a strangeness today that has left my brother and myself guessing. In my garage i keep extra soil, i have one bag of roots organic just open by the door and a second tupperware bin, closed, with my veg soil in it. It consists of Canna Terra pro plus, perlite, a little blood meal, and Mykos from Extreme Gardening. I used it about 20 days ago a sealed the bin and just opened it this afternoon to find a even sheet of a strange white film growing over the entire surface of the soil. could anyone shed some light on what this could be? is it the Mykos and beneficial fungus colonizing and thriving in the soil or is this something nasty and toxic and should be disposed of immediately? any help would be much appreciated.