Twisting leaves?

Dry off the leaves if anythign drips on them... doin't foliar spray, just in case that's the source. It could be caused by more than one thing. If they are well-hydrated, not overfed, underfed, i'd raise the light an inch or two and see what happens. That doesn't look neccessary though. At the age of those plants, i'd most liekly ignore it than try to do anythign about it. when leaves contort, it can be due to heat, light or lack of moisture etc.. could be pH or even some nutrient-related issues. When they are young, this sort of stuff happens on a whim and most often grows out of it quickly. If you choose to be proactive, try the less obtrussive options first before adding anythign you can't take out.