🌱 Verdify

5 min read

March 31, 2026

Generated lab notebook from daily_summary, plan_journal, and setpoint audit data. It is intentionally chronological and may include in-progress cycles before validation.

🌅 Morning Cycle (6:06 AM) — iris-20260331-0600

Status

validated

Outcome score

8/10

Changed parameters

temp_low, vpd_high, mister_engage_kpa, mister_all_kpa, mister_pulse_gap_s

Result: Day 1 (Tue 3/31): Perfectly benign as predicted. 0h heat stress, 0h VPD stress, 3.1h mild cold stress overnight. Peak indoor 84.2F with VPD max 2.53 briefly (no sustained stress). Cost USD 4.26. Grow lights ran 43.6h compensating overcast DLI. Plan accuracy 91.7% (11/12 dispatches hit). Days 2-3 (Wed/Thu) still in progress — snap-back experiment pending Thu.

Reflection

Validating previous cycle: iris-20260330-1930

Previous hypothesis: The cold-wet Tue/Wed window eliminates VPD stress entirely. Heating cost dominates (~-2/night gas for Tue/Wed nights). Thursday snap-back to hot+dry will be the real test — after 48h of moisture-rich conditions, plants may be less acclimated to sudden VPD spike. Pre-positioning aggressive misting at Thu noon (Lesson #7) before outdoor RH crashes is critical. Result: Day 1 (Tue 3/31): Perfectly benign as predicted. 0h heat stress, 0h VPD stress, 3.1h mild cold stress overnight. Peak indoor 84.2F with VPD max 2.53 briefly (no sustained stress). Cost USD 4.26. Grow lights ran 43.6h compensating overcast DLI. Plan accuracy 91.7% (11/12 dispatches hit). Days 2-3 (Wed/Thu) still in progress — snap-back experiment pending Thu. Score: 8/10

New finding: Overcast days with 100% cloud cover and outdoor temps 45-58F produce zero VPD or heat stress — pure grow-light-compensation days. Slab retention + house heat keep overnight above 59F with minimal heater assist at 44F outdoor. Cold stress (3.1h) was below 55F threshold overnight — acceptable. → Added to Lessons Learned

Hypothesis

Conditions: Cool overcast morning: 59F indoor, VPD 0.42, 76% RH. Outdoor 44F, 56% RH, 100% cloud cover. Cold front Day 2. 7-day context: hot-stress day Sat (10h heat+8.6h VPD), benign Sun (3h heat), near-zero stress Mon overnight. System health 86/100. Testing: Thu VPD snap-back test: after 48h of low-VPD comfort (Tue/Wed), does pre-positioned Lesson #7 misting at 10AM (engage=1.3, gap=30s) control the Thu afternoon VPD spike better than a reactive 12PM start? Compare Thu 1PM VPD vs Mar-25 same outdoor conditions (1.85 kPa). Secondary: heating cost for Wed/Thu cold nights (outdoor 37-42F, gas-first Lesson #3). Expected outcome: Tue: zero VPD high stress, zero heat stress. Wed: <1h VPD stress from brief dry window. Thu: VPD peak <2.5 kPa average (south zone <3.5 kPa), heat stress <6h. Overnight heating cost <.50/night for Wed+Thu. DLI: grow lights compensate overcast Tue/Wed to maintain 14+ mol estimated plant DLI.

Setpoints

Tuesday March 31

Primary crop-band changes:

06:00high 82; low 60; vpd_h 1.8; hyst 0.3

Standard.

12:00high 82; low 60; vpd_h 1.6; hyst 0.3

Standard.

19:00high 82; low 58; vpd_h 2; hyst 0.3

Standard.

Tactical tunable changes:

06:00d_cool 3; engage 1.5; all 1.8; pulse 60; gap 45; wt 1.5

Standard.

12:00d_cool 3; engage 1.4; all 1.7; pulse 60; gap 45; wt 1.5

Standard.

19:00d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5

Standard.

Wednesday April 01

Primary crop-band changes:

06:00high 82; low 58; vpd_h 2; hyst 0.3

Standard.

12:00high 82; low 58; vpd_h 1.6; hyst 0.3

Standard.

17:00high 82; low 58; vpd_h 2; hyst 0.3

Standard.

Tactical tunable changes:

06:00d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5

Standard.

12:00d_cool 3; engage 1.4; all 1.7; pulse 60; gap 45; wt 1.5

Standard.

17:00d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5

Standard.

Thursday April 02

Primary crop-band changes:

06:00high 82; low 58; vpd_h 2; hyst 0.3

Standard.

10:00high 82; low 60; vpd_h 1.6; hyst 0.3

Standard.

13:00high 82; low 60; vpd_h 1.4; hyst 0.3

Standard.

17:00high 82; low 60; vpd_h 1.6; hyst 0.3

Standard.

19:00high 82; low 58; vpd_h 2; hyst 0.3

Standard.

Tactical tunable changes:

06:00d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5

Standard.

10:00d_cool 3; engage 1.3; all 1.6; pulse 60; gap 30; wt 1.5

Standard.

13:00d_cool 3; engage 1.3; all 1.6; pulse 60; gap 30; wt 1.5

Standard.

17:00d_cool 3; engage 1.3; all 1.6; pulse 60; gap 30; wt 1.5

Standard.

19:00d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5

Standard.

End-of-Day Summary

Climate

Temperature

57.9–82.9°F; avg 66.0°F

VPD

0.35–2.16 kPa; avg 0.63 kPa

Relative humidity

44.4–81.8%

Stress Hours

  • Heat stress (>85°F): 3.0h
  • VPD stress (>2.0 kPa): 1.7h
  • Cold stress (<55°F): 12.1h

Economics

Electric

USD 0.03

Gas

USD 0.40

Water

USD 0.150

Total

USD 0.58

Equipment Runtimes

Fan 13 min

Primary exhaust runtime.

Fan 23 min

Secondary exhaust runtime.

Vent6 min

Intake vent runtime.

Fog2 min

Fogger runtime.

Heat 1 electric38 min

Electric heater runtime.

Heat 2 gas38 min

Gas heater runtime.

Grow lights1854 min

Supplemental lighting runtime.

Mister south0.00h

South mister runtime.

Mister west0.02h

West mister runtime.

Mister center0.02h

Center mister runtime.

Water

  • Total: 2 gal
  • Mister: 1 gal

Hourly Pattern

12:0082.3°F; VPD 1.81 kPa

RH 52.3%.

13:0081.2°F; VPD 1.59 kPa

RH 56.4%.

14:0080.5°F; VPD 1.46 kPa

RH 59.1%.

15:0080.7°F; VPD 1.53 kPa

RH 57.5%.

16:0080.6°F; VPD 1.56 kPa

RH 56.4%.

17:0080.1°F; VPD 1.36 kPa

RH 61.5%.

18:0078.0°F; VPD 1.02 kPa

RH 69.0%.

19:0074.4°F; VPD 0.78 kPa

RH 73.1%.

20:0071.8°F; VPD 0.65 kPa

RH 75.8%.

21:0069.7°F; VPD 0.53 kPa

RH 78.7%.

22:0068.1°F; VPD 0.48 kPa

RH 79.5%.

23:0066.9°F; VPD 0.43 kPa

RH 80.9%.

00:0065.9°F; VPD 0.42 kPa

RH 81.0%.

01:0065.1°F; VPD 0.40 kPa

RH 81.1%.

02:0064.6°F; VPD 0.39 kPa

RH 81.2%.

03:0062.8°F; VPD 0.49 kPa

RH 75.1%.

04:0059.8°F; VPD 0.45 kPa

RH 74.4%.

05:0059.2°F; VPD 0.42 kPa

RH 75.9%.

06:0061.7°F; VPD 0.46 kPa

RH 75.5%.

07:0061.8°F; VPD 0.49 kPa

RH 74.1%.

08:0061.4°F; VPD 0.54 kPa

RH 70.9%.

09:0063.4°F; VPD 0.60 kPa

RH 70.1%.

10:0068.7°F; VPD 0.77 kPa

RH 67.8%.

11:0072.1°F; VPD 0.93 kPa

RH 65.4%.

7-Day Stress Context

2026-03-25Heat 17.5h; VPD high 13.4h

Cold stress 3.1h.

2026-03-26Heat 14.5h; VPD high 14.2h

Cold stress 1.6h.

2026-03-27Heat 0.0h; VPD high 2.4h

Cold stress 20.7h.

2026-03-28Heat 11.0h; VPD high 12.2h

Cold stress 11.0h.

2026-03-29Heat 15.0h; VPD high 15.2h

Cold stress 5.1h.

2026-03-30Heat 14.5h; VPD high 10.5h

Cold stress 3.9h.

2026-03-31Heat 3.0h; VPD high 1.7h

Cold stress 12.1h.