Window 2026-07-01 → 2026-07-15 · 2 active flower rooms · substrate + climate from AROYA public API (stitched hourly, full-span) · generated 2026-07-15 20:37 UTC
Headline
Rooms audited
2
Facility mean dryback
12.5 pp
Facility mean VPD
1.29 kPa
Rooms w/ wide EC spread
2
Dryback is reported in absolute percentage points (daily VWC peak − trough), the primary crop-steering lever. Substrate (pore) EC is the steering output — its trajectory (stack early-flower → pull back in bulking → restack in ripening) matters more than any single value. Steering intent below is inferred from the data; the grower's configured targets could not be read this run (AROYA SPA session offline — see Data Quality).
Uneven zone EC flagged: Grow Room 1, Grow Room 2 show ≥2 mS/cm spread between substrate zones over the window — check for channeling, dripper uniformity, or mixed-cultivar zone loading. This is the strongest drip-and-drain talking point in the data.
Per-room deep dive
Each room: substrate VWC (dryback shape), pore-EC by zone (steering output + zone uniformity), VPD, and air temperature — hourly over the full 14 days.
Grow Room 1 #19217
VWC mean
44.6%
min 29.9 · max 61.0
Daily dryback
14.2 pp
peak-day 23.9 pp (absolute)
Shots / day
2.2
≥2pp VWC step-ups
Substrate EC
5.8
traj 5.4→5.6 (+0.2) ⚠️ wide zone spread
VPD mean
1.29
kPa
Air / Soil °F
78.4
soil 77.1 · RH 61.0% · CO₂ 1535
Grow Room 2 #19218
VWC mean
38.8%
min 0.7 · max 63.9
Daily dryback
10.7 pp
peak-day 23.5 pp (absolute)
Shots / day
1.1
≥2pp VWC step-ups
Substrate EC
8.3
traj 5.4→15.2 (+9.9) ⚠️ wide zone spread
VPD mean
1.30
kPa
Air / Soil °F
73.3
soil 74.3 · RH 53.6% · CO₂ 968
Irrigation framing reference (P0–P3 day model)
P0 — Activation (lights-on → first shot; wait for transpiration to start). P1 — Ramp-up (small shots back to field capacity + first runoff). P2 — Maintenance (pulses holding VWC at FC, managing substrate EC via runoff). P3 — Dry-down (last shot → next morning; the primary steering lever, read as overnight dryback in absolute pp). Dryback benchmarks (absolute pp): veg 5–15 · early-flower/stretch 20–30 · bulking 12–18 · ripening 25–35. VPD (kPa): veg 0.8–1.1 · flower 1.0–1.4. Substrate EC (mS/cm): stacks into early flower, pulled back in bulking, restacked in ripening.
Data Quality & limitations
Source: AROYA public API room-chart endpoint, stitched into a continuous 14-day hourly series (2-day cap per request worked around). Coverage spans 2026-07-01 → 2026-07-15 for every room — full window.
Not available this run: harvest-group / cultivar metadata, per-room steering config, target ranges, and device-health — all live behind the AROYA SPA session, which was offline (expired token, no interactive login). Numbers above are measured environmental/substrate telemetry; they are not graded against the grower's configured guardrails because those could not be read.
Dryback uses a daily peak−trough absolute-pp proxy; true overnight (P3) dryback requires the lights-schedule from config. Shots/day are inferred from ≥2pp hourly VWC step-ups, not drip-volume events.
Facility ambiguity: today's "Balanced — Drip and Drain" meeting resolved to the Balanced LA org (3 active facilities); this report covers Greenlight - Pepsi 2 specifically. Confirm this is the site in question.