Flipped to 12/12 3 days ago, immediately the next day some of the fan leaves on only one plant started to turn brown. I’ll post a pic. Can anyone tell me what that is caused by ? Only thing I can find is zinc deficiency but not sure.
Marshydro tsw2000 in veg I had it around 24in at 75% strength when I changed to 12/12 I moved it at around 18 inches at full power.
it has to be that bc the the effect was so immediate. I always try to turn up my lights and let the plants grow toward it so it has time to acclimate. Just something I do fwiw.