It's probably algae. I had some of that at the beginning as well and it stopped as soon as I got some proper airflow going in the area. If you already have good airflow then it might be something else... hard to say exactly without pics!
canuck grower Reviewed by canuck grower on . Just gettin started... And i think i already have a problem. Plant is about 2 weeks old and the soil has got a green algae type stuff over the top of it. Im thinkin its mold, should i toss it? Rating: 5