๐ฑ Week 3 โ End of Vegetative Stage
10/04 (Day 22): Watered with 500 ml at pH 5.7, EC 1300. Solution included 2.5 ml/L CalMag + 1.4 ml/L Coco A + 1.4 ml/L Coco B โ Deeper Underground removed from the mix starting today. Runoff measured EC 700, pH 7.0. Considering removing a few fan leaves to allow more light penetration to the lower branches.
10/05 (Day 23): No watering today โ pots still heavy and moist. The tips of new leaves are showing a very light green to yellowish color. Planning to start micronutrient supplementation directly in the nutrient solution in two days. Plants continue stretching rapidly; one grew 4 cm in the last 24 hours. Roots are now protruding through the fabric pots, indicating full root colonization.
10/06 (Day 24): Pistils visible on all plants โ flowering will begin next week ๐ธ. Tried increasing light intensity to 20k lux, but plants showed stress, so it was reduced again. Still not obtaining reliable results with the lux meter, so Iโve ordered a PAR meter to better control light levels. Watered with 1 L of the same solution as Day 22. Runoff EC rising slightly to 750, pH stable at 7.0.
Week 3 Summary โ End of Vegetative Stage
Strong vegetative finish: vertical growth continued steadily, some plants growing 4 cm in 24 h.
Root zone fully colonized โ roots visible through the fabric pots.
All plants showing pistils โ clear sign of transition to flowering.
Light management tricky this week; stress appeared above 20k lux. PAR meter ordered for better control.
Nutrient mix stable at EC 1300 (2.5 CalMag + 1.4 A/B). Deeper Underground discontinued.
Runoff EC ~ 700โ750, pH ~ 7.0 โ substrate still buffered high, but plants adapting well.
๐ผ โก๏ธ Plan for Week 4 โ Flowering Week 1
Nutrients:
Transition feed: keep CalMag at 2.0โ2.5 ml/L, A/B around 1.4โ1.6 ml/L.
Introduce bloom additives gradually (PK boosters or bloom A/B if applicable).
pH: Keep irrigation at 5.6โ5.7 to slowly bring substrate down from 7.0.
EC: Increase gradually toward 1400โ1500 ยตS/cm as flowers initiate.
Lighting: Use PAR meter to maintain 300โ400 ยตmol/mยฒ/s (~15โ18k lux) during transition.
VPD: Raise to 1.0โ1.2 kPa for better transpiration and nutrient flow.
Defoliation: Light removal of large fan leaves if necessary to expose lower sites.
Observation: Watch for stabilization of new growth color and confirm consistent pre-flowering on all plants.