Newbie Grower - Potential Plant Problem?

[Crash-n-Burn]

OK, I'm not sure if this is even a problem. I'm a first time grower and I may just be over-reacting. The leaves on my plants seem to be v-shaped instead of flat. I also have a couple that look really dark in the centers of their growth.

I'm growing some bagseed that broke soil on 12.30 under 8x26w 6500k CFLs. They're about 3-4" from the lights. Medium is a 70/30 mix of Fox Farm Ocean Forest and Fox Farm Light Warrior. I have given them no nutes as of yet. They're being watered as needed with pH 6.4ish well water. Lights-on temps are between 78 and 80 and lights-off is between 70-72.

Here are a couple of pics to demonstrate what I'm talking about. The first two show the v-shaped leaves and the third one shows the darkened center.

Thanks for any help you guys can give!

 

[gc4life]

I would say either it's your soil (seedlings sometimes can't handle that kind of stuff) or possibly over watering.

It's hard to say. The third picture looks pretty good, so whatever it is, hopefully it'll bounce back.

Edit: Also, seedlings sometimes just do things like that. The 3rd picture looks a LOT like the plant I'm growing when it was in that stage. And it's a beast now.

 

[magiccannabus]

Leaves do that taco effect to control respiration. Heat can cause it, so can too much light. Generally it's not a result of over-watering, or starving the roots of oxygen. So I'm going to guess maybe it's not humid enough.

 

[B420]

I believe magiccannabus has it right. Seems to be a lack of humidity. Bring the Humidity up and they should start to look better soon. I wouldn't worry about this too much though either they look pretty good as they are right now too.

 

[Crash-n-Burn]

Thanks guys! What can I do to bring the humidity up? I put a dish of water in the bottom of the cab but it didn't seem to make a difference over a couple of days... I don't have a humidifier but if I need to get one, I can.

ETA: Humidity currently runs 40%ish in the cabinet.

 

[magiccannabus]

40%-ish is not enough. I recommend minimum of 55%, and no higher than 75%. If one bowl of water is not enough then put an airstone in it, or maybe take a small fan and blow it across the surface of the water. A full-fledged humidifier may mist your plants and lights, causing small lenses to form all over everything, which can cause burns.