so far they look good but take it easy on nutes, normally i wont give a plant any nutes until they are 3 weeks into veg or they show signs of needing nitrogen.(yellow leaves starting on the bottom)

i would hold off on nutes the next 2 waterings and then start again right where you are to be sure that they will take and absorb anything giving to them.

the HPS always makes plants looks wierd under the light i had to get used to looking at them this way and its easy to tell whats wrong once you get used to seeing them this way daily.