First grow Super Lemon haze Auto +Jack H

Those leaf tips looks to me that lower your pk booster and flower booster doses to half..seems like light nute burn going on.. Also flush your soil with ph water once.. hope this helps..

@mike6426, Are you 100 % sure there aren't any bugs? Did you use a Digital Microscope? You can pick one up on Amazon. Some of these pests can't be seen with the naked eye. All of the other plants look really healthy. I assume you are feeding them the same. Sometimes there are genetic defects as well. Good Luck! I got one similar to this. Downloaded an app from Google Play. I also use it to check my trichomes for harvest time. https://www.amazon.com/Microscope-Digital-Adapter-Compatible-Android/dp/B07JQCWDSC/ref=sr_1_1_sspa?s=photo&ie=UTF8&qid=1549134919&sr=1-1-spons&keywords=digital+microscope&psc=1

Take a look under your leaves , I bet on some bugs. If there are bugs Then you can use a bit of neem oil mixed with water and manualy apply it with some cotton or a tissue as your plant is still short so it is not necessary to spray something 😊✌️🏼