Leaves pointing straight up help please

dont worry it just means that they are a little too hot. you said that it was happening to the leaves on the top budsites, so those are the tops closest to the light and it is probably a little warmer closer to the light. it is not a mag def. you can add a little circulating fan in between the canopy and the light. or reduce the temps overall.

Leaves will also point up (just before wilting) if plants are dry and hot, this reduces the surface area exposed to the sun, but can only save the plant so long. Then it starts to wilt at the tips and smell realy strong (until you water it again).