Well, looks like in pic 2 & 3 it's nute burn, pic 4 almost looks like a a def. maybe P.

There is this awesome form that you can fill out should be at the top of the plant problems forum. Like if your giving nutes, what kind, what type of soil, does it have nutes in it already, watering schedule, etc. Fill that out and post it.

Can give you a answer i can up 100% without more info.

Those look like clones, correct me if I'm wrong, don't think I am though. The 5 gal.'s could have waited longer, I like to gradually move up, do like 3-4 transplants. i just had a soil issue with clones cause I strayed away from my usual soil. Tisk, tisk. But I fixed that. So yeah, more info is needed!