A Note From (BAM): "This week was a battle with the environment. The plants grew like crazy, but the controller tried to sabotage us every single night. I learned more about VPD, airflow, and the limits of automation than I ever wanted to. But by the end of the week, the plants were wider, the roots were thicker, and I was in control — not the controller." --- Day 8–9: LST & Light Upgrade The FIM sites had fully healed, so I started Low Stress Training (LST) — pinning branches outward with clips to create a flat canopy. I also added the second Sanlight EVO 4-120, angling both lights inward at 40 cm. The plants responded immediately with faster growth and wider leaves. --- Day 10–11: The Fan Controller Nightmare The AC Infinity Controller 69 Pro showed a fatal flaw: every night, when VPD fell below the trigger point, it sent an OFF command to the fan — even with Minimum Speed set to 1. The tent would spike to 80% humidity and 29°C. I tried everything: lower triggers, higher minimums, different modes. Nothing fixed it. The controller simply ignores the Minimum Speed setting when it decides to turn off. The workaround: I have filed a warranty claim with AC Infinity. In the meantime, I am running the fan on a fixed manual speed to ensure continuous airflow. --- Day 12–13: Nutrient Stability & Canopy Width PPM was drifting too low (440–480), so I learned to make a concentrate (2g A + 2g B in 1L RO water) for daily top-ups. This gave me precise control without full reservoir changes. Plant PPM pH Plant 1 509 5.91 Plant 2 519 5.94 Canopy width is now ~45 cm per plant, height 30–33 cm. Roots are thick, white, and starting to fill the buckets. --- Week 2 Summary Table Metric Start End PPM ~570 509 / 519 pH 5.8–6.0 5.91 / 5.94 Canopy width ~30 cm ~45 cm Plant height 27–30 cm 30–33 cm Light setup 1 light at 50% 2 lights at 75% Controller status Intermittent failures Warranty claim filed --- What's Next (Week 3) · Final 2 weeks of veg: Let the LST branches stretch and fill the canopy. Target width: 60–70 cm per plant. · Full reservoir change tomorrow (Sunday): Fresh Sensi Grow A+B, CalMag, Voodoo Juice. PPM target 550. · Controller workaround: Run fan on fixed manual speed until replacement arrives. · Flip to flower: Approx. 30 May — this will be the last veg diary entry before bloom nutrients. --- Closing Thought for Week 2 "The plants forgave the controller's glitches. The roots kept growing. The canopy kept spreading. And I learned that the best automation tool in the tent is not a chip — it's a grower who pays attention." — Master Verdant