So the problem can be found here on the last page thanks for your help! Please my baby's dying.. --> https://www.rollitup.org/indoor-growing/543163-chernobyl-alien-og-blackwater-la-4.html#post7812914
View attachment 2282941 It has now moved to the alien OG also.....
Top leavesDid it start on the bottom leaves first or the top ones?
I was pretty sure it was going to be phos. def. but phos is mobile so not sure. I'm not sure if I can post other link sites on here but see similiar pics of phos def. from icmag. Google complete guide to sick plants. It helped me with my plants. Good luck, and looks like I flowered a little earlier than you on the Alien OG grow. Don't be afraid to feed them.