I've also learned to tape all led lights on equipment inside the room. No one should argue that red led lights inside a flower room can and will cause herm. It's fact. Removal of the hypothetical reason and subsequent correction to the problem is proof positive. As for outside grows, if the streets light penetrates to the plant problems will occur. The moon is reflected light, not the same. It's not the light you see its the light a plant sees and uses that counts. Didn't read all the posts, this was probably already said.