Help Again!

[Gnomex26]

So sorry for asking for help, but your all I have so quick synapse, had 10 plants moved 2 to flower, 1 was male he is outback in yard growing. Female is doing great! Just fed the other 8 2 days ago and 1 plant is showing weird yellow blotchy leaves on 1 stalk... pictures included. I am freaking it's my first grow. I just fed them, I cant think of what this plant is missing?? Will show pics of entire grow to compare. Thanks for helping.

 

[fanleaf]

Yep, they are all purple, that's not normal.

 

[Gnomex26]

That's the light. I am referring to the yellow brown leaves. Sorry I will post a better leaf pic.

 

[SleepDog]

Have you been using proper ph water?

 

[Gnomex26]

Yes 6.5, and all the other plants seem to be good just this one strain, not even sure what strain it is.