I like 18/6 It seems I can judge identify sex much earlier than I remember before. I have notices more Asymmetrical branching and more phenolic expression at 18-6 seemingly anyway or maybe I,m talking out of my behind and it,s just wishful thinking but I'm, happy.they go into the flower room at 11/13. I have a old block bust with a digital also led panels. I,m alsohappy withe the led panels and my current soil more heavy on the perlit.I think the next couple months will be a some nice growing.Me hopes me thinks.When I,ll introduce the uvb I,ll let you knowif youir interested if there is any more noticeable resin output. I will tell you not running them it seems to have made a negative impact. My environment and root growth have been much better. Again these are just my observations and opinions. I mean only to learn not fight. Good day to you all.