^^ im talking a pin size hole in a box thats maybe 5x5x6. not a barn. but during flowering, if you get in your box (or stand out next to that light where your plants are) and you can see any light peering through anywhere, it has a good chance of causing severe stress, not neccesarily hermies so dont get hung up on that, but either way its bad. so ya if you have a huge floodlight 10 feet above your plants outside a few weeks into flowering during the 12/12 dark cycle tyhen yes your taking a stupid risk. once again it may not do anything at all, but it could, especially if you have a strain thats not as genetically resistant to light related stress