The 500W Halogen worklight killed my sproutlings. They had barely gotten their first pointy leaves out and when I found them the next day they were dry and wilted, dead in the soil, which was damp btw.
I found another light in my house that was originally used to light/warm a reptile cage. There are pictures of it below. Will it work as an alternative growlight? Even though you can't really see it in the second picture, it gives sort of a warm, orange-yellow light. It also has a mirrored shade.