🌱 Flowering Update – Full Week 5 Breakdown → Entering Week 6
Week 5 was focused on entering full bulking mode with a controlled increase in volume and EC, followed by a deliberate pause to restore root oxygenation after several heavy feeds.
💧 Irrigation & Nutrition – Week 5 (Exact Recipes)
Start of Week 5 – 7/1 (22 L | 21 °C)
• EC: 1.568 mS · pH: 6.3
• Sensi Cal-Mag Xtra: 30 ml
• Bio·Grow: 6.3 ml
• Bio·Bloom: 109 ml
• Top·Max: 22–23 ml
• Bio·Heaven: 28 ml
• Bud Candy: 38 ml
• Atazyme: 25 ml
➡️ First full-volume bulking feed. Strong uptake and no lockout signs.
Mid Week 5 – 9/1 (22 L | 21 °C)
• EC: 1.568 mS · pH: 6.3
• Sensi Cal-Mag Xtra: 30 ml
• Bio·Grow: 6.3 ml
• Bio·Bloom: 133 ml
• Top·Max: 23 ml
• Bio·Heaven: 21 ml
• Bud Candy: 38 ml
• Atazyme: 25 ml
➡️ Bio·Bloom increased to push flower mass. Plants responded with visible calyx stacking.
End of Week 5 – PK Introduction – 11/1 (22 L | 21 °C)
• EC: 1.640 mS · pH: 6.3
• Sensi Cal-Mag Xtra: 30 ml
• Bio·Grow: 6 ml
• Bio·Bloom: 115 ml
• Top·Max: 23 ml
• Bio·Heaven: 21 ml
• Bud Candy: 38 ml
• Atazyme: 25 ml
• PK 13/14: 6 ml
➡️ Controlled PK introduction. EC peaked safely. Minor tip burn confirmed we were at the productive upper limit.
Recovery Feed – 13/1 (22 L | 21 °C)
• EC: 1.370 mS · pH: 6.2
• Sensi Cal-Mag Xtra: 25 ml
• Bio·Grow: 5 ml
• Bio·Bloom: 105 ml
• Top·Max: 22 ml
• Bio·Heaven: 20 ml
• Bud Candy: 36 ml
• Atazyme: 22 ml
➡️ Intentional reduction to let the substrate breathe after multiple heavy irrigations.
🌡️ Environmental Data (Week 5 Averages)
• Day: 24–25 °C
• Night: 18–19 °C
• Humidity: 50–55 %
• VPD: ~1.0–1.3 kPa
• PPFD: ~880–920 µmol/m²/s
• DLI: ~39–40 mol/day
Stable conditions allowed efficient nutrient uptake without excess transpiration.
🧠 Plant Response
• Strong structure supporting increasing flower weight
• Active bulking phase (buds still stacking)
• Minor tip burn = intentional high-performance feeding
• Color differences consistent with F1 phenotype variability, not deficiencies
🔜 Focus for Week 6
• Resume irrigation only when pots are clearly light
• Next feed: flowering base without PK
• Following feed: single, targeted PK 35/60 application
• Maintain PPFD below 920 (no CO₂ this cycle)
• Preserve night temperature differential to enhance density and color expression
Week 5 set the foundation for final mass. Week 6 is about precision finishing, not pushing numbers.