Flower two and half weeks (Problem)

Okay well this is 2 and half weeks in and three of the northern lights are doing great. But one is not doing good at all. Its dry and had a yellowish orange color. Im not over watering and I use fox farm with a 600 watt HPS. Any help would be great. I think its deformed or something just because the way its growing.

Ive been dealing with a plant doing ,what looks to be the same thing .At first i thought it was a low relative humidity . That checked out ok . Started looking closer at my temps. Temps where about 88f @ about 10 inches from the top of the main stem. I raised the light about 3 inches . The plant seemed to be looking better after couple days , and the temp was running about 80f . On the other hand , my other plant which also happens to be northern lights is doing great .THe northern lights is a bit shorter than the plant im having trouble with . I think its a temp issue ...

I don't think that's a temperature problem. I think you should look at the threads on nutrient deficiencies...

Actually I did some digging around and I suspect Tobacco Mosaic Virus

https://www.icmag.com/ic/showthread.php?p=3666914

I was going to say too much nutes too.

It's definitely not too much nutrients. The way it is localized to certain regions of the plant is what makes me think it's TMV infection.

no sign of over feeding. looks like a potassium def to me.

In picture #4 ,You can clearly see the edges of the leaves curling up . just wanted to point that out..

This is what TMV can look like in marijuana...

It dont look like TMV and the problem plant is picture 1 and 2. Pictures 3 and 4 are doing great and budding like there suppose to. I feed all the plants the same and if it was over feeding then the other three plants would show the same affects too. I think its a problem with the genetics itself but Im no pro this is my first time

mine look the same i added cal=mag and it stopped

Yeah, I think it's a problem with genetics too....genetics of the plant being taken over and expressing genetics of a virus.

heres the link to the pics of my affected areas had 2 plants do this added cal-mag and it stopped ive never herd of the that virus but if it cant infect the rest of your plants just try everything and see what happens before you scap it at the least youll learn how to deal with it next time

oops forgot the link https://www.rollitup.org/marijuana-plant-problems/617752-30-days-flowering-leaves-burning.html