Two plants two diff problems :(...Help!

I have two problems with two plants. I think i know what the problems are but im in need of some experienced growers help!
The plant on the left im thinking nitrogen deficiency because of the lower set of leaves uniformly turning a light yellow. But im not to sure as the the plant that turns yellow then browns to a crisp. So can you help me on this plant mainly
These plants are a mistery to me as they are bag seeds that are being vegged under a 400 W MH...BUT they are flowering by themselves as the light is on 24/7..so im thinking lowryder. But i got that covered in a diff thread
So any help is appreciated as i am going to the hydro store tomorrow to pick up some cures

Looks like you have a couple of autoflowering females. As for the drying of the leaves it could be nute burn or over fert. But you could also be lacking some type of mineral and vitamin. How often do you water? Maybe you just need to flush them. I dunno maybe someone else can shed some light.

Hank.

These are my nutes. I have flushed both plants without improvement and i dont feed that often. maybe once every 3 days

Have you been feeding according to the Advanced Nutrients Chart on there website?

And you are keeping a good eye on both the ph of your water and the ph of your soil runoff....

Hmm, feeding every 3 days seems a bit overkill to me. I water once a week, and feed every other week. Maybe take it easy with the feed for a little while.

are u using distilled water?

to much nutes, if i was you i would bye a EC and PH meter, then you know how much nutes you need, EC from 0,8 to 1,5 and ph 5,7 to 6,2 then you will see youre plants groww fast and helthy

recommned any good ones from the net anyone?