Possible micronutrient deficiency

pH is fine — the plant may need a fresh water change to reset nutrient levels.

Steps to resolve

  1. Drain the tank fully and refill with fresh cool water
  2. Add initial dose: 4 TBSP each Part A and B (Farmstand) or 6 tsp each (Nook)
  3. Resume weekly maintenance — check in 5–7 days