Day 7: Still about the same height as a couple days ago, but the first serrated leaves are now about twice the size of the cotyledons on all three plants.

I noticed that the surface of the soil and some of the vermiculite on one of the plants has begun to turn a bit green - like there's the beginnings of a moss or an algae growing on the surface. Should I be concerned?
ConnieSewer Reviewed by ConnieSewer on . Master Kush x Silver Haze 1st Grow - YAY! First off let me say what a pleasure it is to speak to you guys, and read through all of this information and be a small part of the community. And, many thanks to Zandor for everything he does to bring us so much information, I am an avid listener to the Grow Report - and I love the show. So here's my grow log, I'd appreciate your help. I haven't really seen many grow logs that fully detail every step, so I thought I'd do that with mine, and let you guys see what I've done. Size and Rating: 5