Yellow dying leafs.

My babies are having some problems. They are about 4-6 inches tall and on their 6th set of leaves. My problem is on some of them the bottom 2 sets are getting yellow/brown and crunchy. No nutes have been given yet and am watering with just plain water.

Any ideas what the issue could be?

Could you post any pics to help?? What's your ph running bro? What type of lights you using? Etc'?

Can't post pics from iPhone.
Ph is about 6.5. Running 14,26w CFL about 4 inches away from the tops of the plants. Large oscillating fan in the room. Temps are about75.

You should be able to post pics and most likely they need some nutes nitrogen

I'll give them a light feeding next time I water. As for the messed up leaves I know they won't fix themselves so should I just cut them off?

No just leave em till they are dead and then pluck only the dead ones...do about a 50%feeding ur first time...i feex nutes every watering

looks like you've got some good advice already. I wouldn't stress too much it's probably just wanting more N

Ok cool. Not as stressed out now.
Thanks guys!!

Miracle grow 24-8-16 at1/4 strength. Would that be good for now?
It's all I have on hand, I'll get some better nutes here soon.

Your talking about the first set a leafs the cotyledons? Or you talking about the first true set of leafs? If its the cotyledons your talking about dont worry about it. They die and fall off.

to get the full website here on your iPhone. Scroll to the bottom of the page and click "view full site".

First true set of leaves.
Codyelons are pretty much done.
It's the 2 sets above that. Those are the ones with the problems.

http://landresources.montana.edu/NM/Modules/Module9.pdf
there's a chart on page 6 it will help you to determine what your problem is. Like the others have said it sounds like (N) deficiency, but other deficiencies will produce the same results with minor differences. Use the chart, it works.

Thanks bro I'll check it out.

Still having this problem. I have been feeding every other watering.
Leaves yellow then turn brown and crispy then die off.
It has started moving up the plants as well. I can't seem to figure out the problem.

Well, so you say your feeding every other watering?? Well bro, have you ever grew this strain before? Reason why I ask is because "some" strains are more sensative to nutetrients. How old are your babies again? Are you doing a daluted
Mixture? Or using full strength?!..

The problem has been stated already you wernt using nutes. Your nitrogen was probably to low and also as stated leave the leaves on the the plant till they die off themselves then pluck ( should be able to pull off very easy).

Nitrogen deficiency was my first thought too but it may be damping off. How often are you watering? Are you letting it dry out completely between waterings?

Yes I have grown this strain before. Growing it the exact way as I did last time. Last time I didn't have this problem. I started them from seed on 12/25.
I'm still using 1/4 stringth like I was before.

I water once a week or so. I don't let the soil get bone dry but it gets pretty dry between waterings.

Well bro, that would be my assumption, is (N) Nitrogen is low. Or like "Potpimp" stated, it could be damping off!

I'll try upping my mutes next feeding and see if that helps. If not and it gets worse ill just scrap them and start over. I'd really hate to do that but sometimes you gotta do what you gotta do.