Critical Purple Auto 1st

Week 4 has seen some explosive growth. On day 1 of week 4 I used a bent hair pin to start LST. Plant saw no delays and appeared to do just fine. I traveled out of town for a little over 48hours and just made sure the plant was hydrated, but left the lights off while gone. I returned to find it still saw significant growth and did not see to affect the plant negatively at all. Stem is visibly much thicker.