Humboldt Seed Company: Blueberry Muffin

Hello Growers, Here is a quick update on day 41 of the 4 blueberry muffins. Started to notice some light stress on Plant #1 as you can see in the picture I included. All new growth has yellow tips and the older bigger growth is curling up. Today I proceeded to raise the HLG 350r by another 4-6 inches to see if this improves these symptoms. I will also need to test PH to see where all 4 plants are and proceed accordingly. I am certain it is not a Nitrogen deficiency as I fed them earlier this week and I ruled out toxicity as well because I fed them on the conservative side. Let me know if you guys have any other recommendations with the info provided. Happy to provide more if necessary.