March 31, 2026
Generated lab notebook from daily_summary, plan_journal, plan_delivery_log, and setpoint audit data. It is intentionally chronological and may include in-progress cycles before validation.
🌅 Morning Cycle (6:06 AM) — iris-20260331-0600
validated
8/10
temp_low, vpd_high, mister_engage_kpa, mister_all_kpa, mister_pulse_gap_s
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:
| Time | Values | Note |
|---|---|---|
| 06:00 | high 82; low 60; vpd_h 1.8; hyst 0.3 | Standard. |
| 12:00 | high 82; low 60; vpd_h 1.6; hyst 0.3 | Standard. |
| 19:00 | high 82; low 58; vpd_h 2; hyst 0.3 | Standard. |
Tactical tunable changes:
| Time | Values | Note |
|---|---|---|
| 06:00 | d_cool 3; engage 1.5; all 1.8; pulse 60; gap 45; wt 1.5 | Standard. |
| 12:00 | d_cool 3; engage 1.4; all 1.7; pulse 60; gap 45; wt 1.5 | Standard. |
| 19:00 | d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5 | Standard. |
Wednesday April 01
Primary crop-band changes:
| Time | Values | Note |
|---|---|---|
| 06:00 | high 82; low 58; vpd_h 2; hyst 0.3 | Standard. |
| 12:00 | high 82; low 58; vpd_h 1.6; hyst 0.3 | Standard. |
| 17:00 | high 82; low 58; vpd_h 2; hyst 0.3 | Standard. |
Tactical tunable changes:
| Time | Values | Note |
|---|---|---|
| 06:00 | d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5 | Standard. |
| 12:00 | d_cool 3; engage 1.4; all 1.7; pulse 60; gap 45; wt 1.5 | Standard. |
| 17:00 | d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5 | Standard. |
Thursday April 02
Primary crop-band changes:
| Time | Values | Note |
|---|---|---|
| 06:00 | high 82; low 58; vpd_h 2; hyst 0.3 | Standard. |
| 10:00 | high 82; low 60; vpd_h 1.6; hyst 0.3 | Standard. |
| 13:00 | high 82; low 60; vpd_h 1.4; hyst 0.3 | Standard. |
| 17:00 | high 82; low 60; vpd_h 1.6; hyst 0.3 | Standard. |
| 19:00 | high 82; low 58; vpd_h 2; hyst 0.3 | Standard. |
Tactical tunable changes:
| Time | Values | Note |
|---|---|---|
| 06:00 | d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5 | Standard. |
| 10:00 | d_cool 3; engage 1.3; all 1.6; pulse 60; gap 30; wt 1.5 | Standard. |
| 13:00 | d_cool 3; engage 1.3; all 1.6; pulse 60; gap 30; wt 1.5 | Standard. |
| 17:00 | d_cool 3; engage 1.3; all 1.6; pulse 60; gap 30; wt 1.5 | Standard. |
| 19:00 | d_cool 3; engage 1.6; all 2; pulse 60; gap 45; wt 1.5 | Standard. |
End-of-Day Summary
Climate
57.9–82.9°F; avg 66.0°F
0.35–2.16 kPa; avg 0.63 kPa
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
USD 2.59
USD 0.40
USD 0.010
USD 3.00
Equipment Runtimes
| Equipment | Runtime | Reading |
|---|---|---|
| Fan 1 | 3 min | Primary exhaust runtime. |
| Fan 2 | 3 min | Secondary exhaust runtime. |
| Vent | 6 min | Intake vent runtime. |
| Fog | 2 min | Fogger runtime. |
| Heat 1 electric | 38 min | Electric heater runtime. |
| Heat 2 gas | 38 min | Gas heater runtime. |
| Grow lights | 1854 min | Supplemental lighting runtime. |
| Mister south | 0.00h | South mister runtime. |
| Mister west | 0.02h | West mister runtime. |
| Mister center | 0.02h | Center mister runtime. |
Water
- Total: 2 gal
- Mister: 1 gal
Hourly Pattern
| Hour | Temperature | VPD | RH |
|---|---|---|---|
| 12:00 | 82.3°F | 1.81 kPa | 52.3% |
| 13:00 | 81.2°F | 1.59 kPa | 56.4% |
| 14:00 | 80.5°F | 1.46 kPa | 59.1% |
| 15:00 | 80.7°F | 1.53 kPa | 57.5% |
| 16:00 | 80.6°F | 1.56 kPa | 56.4% |
| 17:00 | 80.1°F | 1.36 kPa | 61.5% |
| 18:00 | 78.0°F | 1.02 kPa | 69.0% |
| 19:00 | 74.4°F | 0.78 kPa | 73.1% |
| 20:00 | 71.8°F | 0.65 kPa | 75.8% |
| 21:00 | 69.7°F | 0.53 kPa | 78.7% |
| 22:00 | 68.1°F | 0.48 kPa | 79.5% |
| 23:00 | 66.9°F | 0.43 kPa | 80.9% |
| 00:00 | 65.9°F | 0.42 kPa | 81.0% |
| 01:00 | 65.1°F | 0.40 kPa | 81.1% |
| 02:00 | 64.6°F | 0.39 kPa | 81.2% |
| 03:00 | 62.8°F | 0.49 kPa | 75.1% |
| 04:00 | 59.8°F | 0.45 kPa | 74.4% |
| 05:00 | 59.2°F | 0.42 kPa | 75.9% |
| 06:00 | 61.7°F | 0.46 kPa | 75.5% |
| 07:00 | 61.8°F | 0.49 kPa | 74.1% |
| 08:00 | 61.4°F | 0.54 kPa | 70.9% |
| 09:00 | 63.4°F | 0.60 kPa | 70.1% |
| 10:00 | 68.7°F | 0.77 kPa | 67.8% |
| 11:00 | 72.1°F | 0.93 kPa | 65.4% |
7-Day Stress Context
| Date | Heat | VPD high | Cold |
|---|---|---|---|
| 2026-03-25 | 17.5h | 13.4h | 3.1h |
| 2026-03-26 | 14.5h | 14.2h | 1.6h |
| 2026-03-27 | 0.0h | 2.4h | 20.7h |
| 2026-03-28 | 11.0h | 12.2h | 11.0h |
| 2026-03-29 | 15.0h | 15.2h | 5.1h |
| 2026-03-30 | 14.5h | 10.5h | 3.9h |
| 2026-03-31 | 3.0h | 1.7h | 12.1h |