Biocanna outdoors

I have 6 plants, 3 8 ball kush and 3 afghan skunk. They are huge and my question is am I feeding them enough. I get this yellowing with spots and curling up. I'm thinking it could be mag deficiency but I also think that 16ml biobega or Flores may not be enough for them. They are about 8' tall in 10 gallon smart pots. Should I up the dosage?

are they drying out and wilting at all in between waterings or anything.. ive only had shit die off this year because of not watering as much as I should of . but it was raining so much that I didn't have to for a while..

just clean out the dead shit before it helps the plant rot.. and keep things going.. if its low on the plant.. don't worry.. but if its happening up near the new growth.. then maybe start a remody

They are drying pretty good between watering, not enough to wilt. I feed them every other day and are in smart pots which ill never do again outside. I just noticed today that the fan leaves at the top are twisting a little. At the base not the actual blades of the leaves. Never seen that before. I honestly think that 10 gallons is no longer enough for them even though smart pots are not supposed to get root bound. I transplanted one to see if it helps.

The first pic is afghan skunk and I'm expecting her to improve after the transplant today. The 3rd is an 8 ball and 4th is afghan and they show how the leaves are twisting away from the sun. Maybe they need fed every day. Absolutely will go in ground next year. Anyway thanks for the advice joint.