OK I got some auto flowers which are in about week 4 of flower. I'm using destiny organic pre mixed soil I top dressed with dry ammendments week 1 and 3 of flower and gave it a molasses tea week 4 recently. I've also added some Epsom salts 2 days ago to see if it would help it doesn't look like it has. I was thinking lights but I got one real tall plant who looks in perfect condition. So kinda stumped. Also all the lower growth looks real good so I can't see it being nitrogen. It's mainly the big bushy plants.