Found the culprit for reveg, light in the middle was powering trough a faulty timer that didnt shut it off completely at night which was visible only if you looked at the LEDs from underneath which i rarely did since wanting to avoid light leaks and minimized interactions at night :)
Why did Lavender develop some yellow tinge compared to other plants, should I worry? Feeding only pH'd water , maybe I gave her too little water since I try not to overwater?
Yes, the cause for these yellow edges are indeed overwatering. I see that you only water around the plant. You need to water at least 10 cm away from the plant. You want the roots to search for the water. And they need acces to oxygen. You are suffocating the plant now by watering so close to the plant!
All three ladies are photoperiod Purple Queens purchased from RQS. For photoperiod plants to go into flowering they require 12 hours of darkness, so unlike most of my previous autoflower grows, we will be
switching from 18/6 hours of light and darkness to 12/12 to induce flowering at some point.