redness on leaves

[dizzy spells]

hi i have 2 plants under 1 400watt hps light
& in the wifes words,the plants seem distressed because they have a redness from the top of the stalk to the leaf.can any1 explain this.
see attached pics.
if theres nothing wrong with them ,maybe im living with 3 plants!

[kingcanabis]

look in to your phosphorus leaves thay mite b low....good luck