Bush of Purple Kush First time grow.

I am a First Time grower and 1st year Horticulture student @Olds College in Alberta Canada. This week brought about a huge building of Trichomes, after signs of nutrient burn arose last week. A proper flush was able to get my EC back under control. The smell continues to amaze me every time I take a peek. Switching to distilled and R/O water before I started my flowering process was crucial. I live in Alberta, the limescale from the taps was wreaking havoc on my humidifier and exhaust fan. The EC reading on the tap water was 0.6 mS, I will never use tap water again for my grows. I will begin my flush 14 days from harvest. I am becoming Skeptical that these are not in fact Bubba Kush, they look more like Purple Kush to me. Does Anyone have any opinions?? Thoughts. I will be keep an eye on the trichomes with my electron microscope for proper harvest date.