Licht am glimmen wenn aus

I would avoid any light if possible try to tape it with duck tape and if not just be careful and watch out very closely that you don't get any Hermies ! I have definetly grown plants with lightleaks and nothing has happened everything was fine, but I have also had once in a while a hermie and it was usually always near the light leak ✌️🏻💚🙏🏻💨good luck

autoflowers context -- minimal issue, though may cause some stretch at night? not 100% on that, but if the glow is enough it could cause odd growth at night. it is either your timer or a defective phosphor layer in LED... if you physically unplug it, if it still glows, you know it's the phosphor layer.. if it's te timer, i'd suggest finding one that physically disconnects the circuit so no power can trickle through. if you can discern a later in a book (or word), then it is too much light and will definitely cause problems for photoperiod plants in bloom/flower phase. Something like 10millimoles/s of light is enough? Dr. Bruce Bugbe / Apoggee Instruments on youtube has a video on this... you may have to double check my from-memory threshold... if oyu don't have a par mater it doesn't matter, your eyes cannot measure in this way.. .so the book example is good to use for comparison... can you distinguish letters or not? if so, too much light. be open-minded... a beam of light is different than diffused light... beams are more intense. if there's a beam of light, that's where you want to hold up a page of text to test.