My plants are around 4 weeks old since germination. One plant has yellowing on lower leaves but seems to be growing okay, it’s around 71/2" tall. I think it’s a nitrogen deficiency but, I’d like a pro tell me what they think.
Size of space: 25" X 36" X 60"
Soil: FoxFarm Ocean
EC/TDS ppm levels:
Light system: HPS
I also have a fan and ventilation system