from hps to mh ok?

hi guys i made a post earlier about gettin another light ended up gettin 600w mh. Im currently usin 600w hps and im 3weeks into veg and wonderin if its ok 2 switch to the mh or will this cause stress

you'll be alright, hard to stress em in veg.

Ok no probs. Its a superveg 600, any 1 had anx exp with these