Any light that's not green that's in the dark periods of the flower cycle will stress your ladies alot. KIND led are the worst for this they sell really expensive light units and put backlit led screens lmao nah no light but green light. If you paranoid about hermies like me then I would suggest kitting your grow room out with a large green light that way if there is any light leaks the only light getting in is green and cant hurt your ladies :)