skinny leaves

Hello everyone.

I'm having a problem with my plant that I hope you can help me solve.

Some of the leaves are somewhat skinny and folded from their middle section (imagine the shape of a boat hehe).
Some of the leaves' tips are bent downward, mostly on the skinny leaves, but also on some "healthy" ones. Most of the leaves look healthy it's just a few of the leaves that look like that, but it's a problem that happens to old and new leaves alike.

What do you think could be the problem with them?

Thanks in advance for your help! =)

over fertilized/heat

Dirtyboy said:

over fertilized/heat

Click to expand...

I have some of the same (2 1/2 weeks into flower)

Temp is fine, and I'm kicking up the fertilizer, so if it is over fertilization it should get worse right? Keep an eye on my grow next week... time will tell.

I'm not sure what it is, other than stress - flowering is stress