Week 6: Late Flowering Development
Overview
Stage: Late flowering
Focus: Bud bulking, resin, and terpene production
Environmental Conditions:
Temperature: 24°C (day), 20°C (night)
Humidity: 50–55%
VPD: 1.4 kPa (stable, controlled by AI AC system)
Light Intensity: 720 PPFD
Nutrients:
Feeding at 2.2–2.5 EC with Athena Pro Line nutrients:
Pro Core: 36 mL/10 L
Pro Bloom: 60 mL/10 L
Cal-Mag: 40 mL/10 L
Silica (Athena Stack): 15 mL/10 L
Cleanse: 30 mL/10 L
Adjusted pH to 6.1 to optimize nutrient uptake.
Watering:
8 liters per plant, twice daily (morning and evening), with 10–15% runoff.
Plant Observations:
Buds are visibly swelling and firming up.
Trichomes are increasing, giving a frosty appearance.
Leaves showed slight discoloration earlier in the week due to nutrient adjustments but improved after balancing EC and pH.
Runoff EC dropped to 1.8 EC, indicating strong nutrient uptake.
Adjusted light height and intensity to avoid light stress.
Actions Taken:
Increased PK nutrients to enhance bud development.
Gradually lowered humidity from 55% to 50% to avoid mold in dense buds.
Light defoliation was performed to improve light penetration and airflow.
Start of Week 7: Preparing for Peak Bud Bulking
Overview
Stage: Transitioning to ripening phase
Focus: Maximizing bud density and resin production
Environmental Conditions:
Temperature: 23–24°C (day), 20°C (night)
Humidity: Reduced to 45–50%
VPD: Maintained at 1.4 kPa
Light Intensity: Increased slightly to 750–780 PPFD
Nutrients:
Continued feeding at 2.2 EC:
Pro Core: 36 mL/10 L
Pro Bloom: 60 mL/10 L
Cal-Mag: 40 mL/10 L
Silica (Athena Stack): 15 mL/10 L
Cleanse: 30 mL/10 L
Preparing for potential EC increase to 2.4 if nutrient uptake remains high.
pH raised to 6.2 to aid phosphorus and potassium uptake.
Plant Observations:
Pistils are 60–70% white, with some beginning to darken and curl inward.
Trichome production is high, with a mix of clear and cloudy trichomes.
Buds are becoming noticeably denser, with increased terpene aromas.
Runoff EC stabilized at 2.0 EC, indicating balanced nutrient uptake.
Actions Planned:
Continue maintaining VPD at 1.4 kPa through the AI AC system.
Gradual adjustments to lower humidity to 45% toward the end of the week.
Monitor trichomes closely for ripening progress.
Monitor runoff EC daily and adjust nutrient levels as needed to avoid deficiencies.
Key Notes
Plants are progressing well, with no major signs of stress.
Anticipate a potential increase in water demand and nutrient uptake as bud bulking peaks.
Maintain focus on preventing mold through airflow management and controlled humidity.
