Secondo grow

Hello mate, you probably have nutrients lock out in your pots, your plants never get the nutrients they need it. You should have a problem with Ca/Mg, the right ratio using organic nutrients is 3:1/4:1, normally in tap water this ratio is totally unbalanced. Without the rigth amount of Ca/Mg so absorption of macro-nutrients (NPK) are blocked to the level of Ca/Mg available. These things could cause different reactions in the plant that seem other issue. Good luck and happy journey with your plants!

well you get about 4 weeks of vege growth after flip to flower -- in autoflowers that's about 10 days before you see preflowers and is always a guesstimate, so be forgiving. the red vs blue heavy cct does matter, but it will never change a leopard's spots despite having a measurable effect. short bushy plants will still be short bushy plants under 2700K lighting. Too much light could keep them short too. this would be obvious if internodes are very short. These plants won't grow much more if they are already noticeable slowing down. This is a drawback of autoflowers. if you train too long this happens. Since they have varying amounts of vege length, it's impossible to know before it happens. autoflowers suck if you want consistency and for plenty of other reasons too. The damage on leaves - maybe calcium deficiency if you aren't fertigating too often. usually ca wills tart with spots, not big blotches. big blotches of damage between veins makes me think watering habits/frequency of fertigation. if you choose to remove some leaves - stick to leaves overlapping that might cause condensation. try not to remove too many leaves from 1 branch, i.e. spread it around well. Keep as many as you can by only pruning a leaf off with an incredibly good reason. Gaps in canopy are lost/wasted photons of light. keep a full canopy.