Thick moss/algae/mold growing on surface of soil
I sowed tomatoes, peppers, herbs and annuals under a grow light system, most everything has sprouted and looking good. My question is there is a thick layer of moss or algae or mold on the surface of the soil will this cause problems down the road? I do have an oscilating fan that I run full time. I've tried removing some where the seeds have already sprouted. Some of the peppers have just sprouted and the tops looked like they were chewed off. Can't image what could have chewed them off. The setup is in my basement about 4' off of the floor. Could it be the moss/algae/mold growth?
I used old seedling mix from last year that had mold on the outside of the bag so I think that is where the mold came from.
I was also thinking of repotting the seedlings and setting out in my cold frame, would this take care of the growths? Last year I had a white fly problem and repotting and setting out in the cold frame with a yellow glued sticker solved that problem.