1st grow - CBD Therapy, purple new growth [with pictures]

Hi all I have a couple of 2 week old CBD therapy seedlings, and a week old Blue Mammoth Auto. The new growth is all purplish / greyish at the edges. The possible issues are apparently boron or calcium deficiency. Or water deficiency. Or excess heat.

I've uploaded pictures of the seedlings, was wondering if anybody has any ideas what could be wrong?

Ur pics r broken... Or something.

Ooo boy a XXX thread..

Sorry, here are the images:

If you can't see the image in the last post, right click on the [ img ] tag and click open in new window.