All right i'm using 1 400watt metal halide and 1 400 watt hps at the same time. i'm trying to get a full spectrum. is it better to use just mh or just hps. i've also heard mh for veg and hps for bud is this a good idea? i've 1 more of each type of light so i could set them up if ya'll think its a good idea. 6 plants in a 4' 1\2" X 4' 1/2" room lined with mylar any help would be great!