I have read that plants respond to .007 lumens of light. The brightest night with a full full moon can get is .003. So think about how dark your room needs to be. I grew up in the boonies, so I know what dark really is, and if you have small light leaks, as long as it isn't strong light rays, it will be fine. I (may or may not) grow in a closet, all I do is keep the cracks double taped. You can still see a light glow of the tape, but if I look down, I am unable to see my hands. If you can look down and see your hands, its too light. I have always had a normal/acceptable male:female ratio.
ValkyrieAg Reviewed by ValkyrieAg on . light leek how muc is to much ok well when i step in the flower room theres very little light, but still noticable. There is no direct like being let in but materials that have some transparency, the only lights effecting the room are 6 2' fluoro tubes about 12,000 lumens, now the amount that gets into the flower room seems like barely any but its still getting in, cant really see anything but i can see shadows, just makin sure i dont harm my flowering babe. i know there is a lumen rating for the moon like 2,000 lumens or Rating: 5