i have germinated 6 seeds about a week ago and they all look quite healthy. but the entire duration of their so far short lifetime they have had what looks like gnats. they are small about the size of a pin head and have wings and they just fly around and hide in the soil. i have yet to see one on any of my babies but for an indoor grow i am still concerned with insects doing harm. any one have any idea what they are and if they are hazardous to my plants health/future. and if they are what can be done to get rid of them???