I'm using Spectrum King full spectrum led lights. Having fabulous results so far. Expensive and seems to be worth every penny. I'd recommend looking into this particular brand.
Wow nice. It's funny I'm growing purp and I think mine are nearly same age. My ladies stand 4' and looking a little light for 4.5 weeks in. On other strains I see bigger buds by this point. Is this normal for purp? Do mine look light to you?