They have been on 12/12 for around 2 weeks but the leaves were like this before. Some are only grow half the size an look like you have held a lighter to plastic how it shrivels in but the tips arnt burnt ?????/
I suggest that this issue is strain specific, with so many cross breeds these days, you only need one fucked up DNA plant from 6-24 generations ago, to cause something like this, don't worry buddy you ain't the first, you ain't the last ... Some breeders still use Colchicine, bit like our granddads standing under an A-Bomb in the 1950's and expecting us the grand children to be normal.????