Yikes! The bottom set of leaves are folding under and twisting!

I've done some research on my problem but I can't seem to find any answer. I'm sure it's probably something simple, but anyway.

-It's currently day 25.
-I JUST used a small (1/4 strength) dose of ferts on it to see if it could help out - No signs of recovery yet.
-Temp is kept at a steady 80 F.
-There is plenty of ventilation as well as some c02 flow.
-The PH is 6.4-6.8

The leaves are a dark green, the tips are now getting crispy and have been curling under slowly for over a week now. Any help would be most appreciated.

:confused:

Sounds like overfeeding.Nuteburn

PH is to high... set it on 5.6-6.0 but that´s not the reason the bottom leaves are folding. Why are the plants so small in day 25, that would be mine consern...

JDog - I thought the same too, but I haven't given them any nutes for at least a week since this nonsense has been going on. I foliar fed them ONCE with a quarter strength dose, but that was it.

Britewire - I know they're little ladies, they've had a tough life. Aside from me not having my lights here when I first started the grow, (I was putting them outside which was basically the same as flowering *rolls eyes*) I also had the light too close to them for a few days.

Any other ideas? The plant directly next to it seems to be thriving just fine. no curls, maybe it's just a bushy plant and the leaves are dying due to the first 2 weeks of stress in 12/12. I have no idea! Haha

What are signs of under fertilizing? Could that be a plausible cause?

Never folair your plants. If its nute burn it may not be from not from the roots. Leaves are not the same as roots and why companies tell you to folair is beyond me. Nitrogen for instance has to be converted from organic form to inorganic form to be useable to the plants. This is done with microorganisms and oxygen under the soil. Leaves are not ment to take in nutrients and mostly what it does is burns them. I would spray her down with water to wash that junk off.
One love
c

When your tips burn that is the first sign of over fertilizing. I use on average one tenth of the recommended doses of most products. I never get burnt tips.
Have grown thousands of ladies.
One love
c

awesome. thanks for the info karm.

Should I go ahead and just spray her leaves with water before she sleeps and when she wakes up, flush her and start her nute cycle at a VERY low dosage?

Exactly spray her before she goes to bed(I let my kids party all day and night) or when she is not in direct light from a HID as you can burn the leaves. I would flush and feed at a low dose. I use atmost like one fifth of the recommend dose on average. Its best to feed the same every time and as apposed to one a week or every two weeks. You got to break down the dose to one fifth say then break that down again to the amount of times you water in the week or two week period that the company recommends.
What strain is she?
c

Awesome, I appreciate the info and fast relpies WAY more than you know. :D
She's bag seed, and so is her friend. Her friend is doing a little bit better though.
*gets Dutch Master Reverse on stand-by*
I already know over 5 things I'm doing different on my next grow :p

Do you grow soil or hydro? I'm going to try FoxFarm Ocean Forest next time I think as far as soil goes. Worm castings and micro nutrients, mm MM!

Also, Purple Stems = Magn Def = Epsom Salt?