Need help identifying the deficiency please

[425jesse]

Howdy all, I have a number of grows under my belt, but near the 1/2 way thru flower mark On this and the last one, leafy issues seem to start at the bottom of some of the plants, and work their way up.

Hydroponics using Canna nutes (1/2 strength or less)
PH stays right about 5.8-5.9
Variety of LED lights,
Expanded glass for the medium

Now for the photos
Leaves off of the Jack Herer Auto

Leaves from the Stankberry

Leaf from the Gorilla Bomb

Anyone got any suggestions? They are all a part of the same recirculating hydro system, but look different.

Any advice would be welcome!

Thank you!

 

[Old Salt]

It could be the plant sucking the nutrients out of the leaves for bud production, as you are more than half way through the flowering stage. If not that, it could also be a nitrogen deficiency.

 

[Sask420grow]

Those stems are super purple. Magnesium deficiency is usually main culprit for that but it could be the strain... I don’t know autoflowers very well