I had no luck with previous cultures, this culture I was told to put a sheet of glass over the top of the culture, and for some reason it works, there seems to have been rapid growth, and my worms are always feeding. I am using moistened bread, moistened with water from the fish tank, and am feeding small squares, just enough so that they eat it in about a day. I feed this amount so that if I do feed too much it is usually finished by the second day. I don't like the thought of leaving foods longer than that as I know how easily mould can decimate a culture.