Leaves curling upward

I've been growing one Northern Lights auto plant for about a month and a half, and she's been great all the way up to this point. But recently, about half of my leaves tips are curling upward, not in a rediculous way, but enough to worry me some. I've read that i may be MG deficiency? I'm not exactly sure, this is my first time growing. I haven't fed her any nutes yet, partially because I have no idea when I should be feeding it nutes and what kind of nutes I should get. I was told by a couple of friends that maricle grow works really well, but I've also read on here that somebody would rather "puke all over his plant and use that as fertilizer".

So I just need some help with what may be the problem with the leaves, and what kind of nutrients I should get to start feeding my plant. Thanks!

Are the leaves getting lighter around the edges of the leaves? If not than it's probably not a magnesium deficiency.

Upward leaf curl is generally associated with either under watering or hot temps. But since it's not crazy with the upward curling, than I'd say it sounds pretty normal to me. Sometimes when plants are happy and growing fast, the new growth will curl a little upwards towards the light. Almost as if the plants are reaching for the light with all their leaves because it feels so good that they just wanna soak it all in. I've even seen leaves point almost straight up before, because they loved the light and their environment so much. Could you maybe post a picture so I can know for sure if it's a normal behavior or not?

Heat too high basically and i wouldn't buy MG fertz ever again,i actually had a whole bag that i lost what was prob a good thing that i did,only thing i would buy MG POTTING MIX.
If your only choice is to get MG nutes then remember to cut it to 1/4 suggested feeding strength.

You gotta post pic for these guys to help ya bud!! Put a pic up!