Switched out my light to the HLG 100 V2 4000K this past week. Just letting the plants do as they do. Drenched with Rootwise Mycrobe earlier in the week and watered again tonight. One leaf tip on the Celestial Tremors #1 was dying off so I removed it today. I had the light a few inches lower and perhaps that was the cause but uncertain as the other plants don't show any problems. Both plants are 2.75" tall.