Window 2026-07-01 → 2026-07-15 · 6 active flower rooms · substrate + climate from AROYA public API (stitched hourly, full-span) · generated 2026-07-15 20:33 UTC
Headline
Rooms audited
6
Facility mean dryback
10.5 pp
Facility mean VPD
1.25 kPa
Rooms w/ wide EC spread
3
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 3, Grow Room 4, Grow Room 6 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 #19806
VWC mean
46.9%
min 29.3 · max 61.4
Daily dryback
14.5 pp
peak-day 19.4 pp (absolute)
Shots / day
2.2
≥2pp VWC step-ups
Substrate EC
4.0
traj 3.3→4.6 (+1.3)
VPD mean
1.23
kPa
Air / Soil °F
79.2
soil 76.2 · RH 64.0% · CO₂ 1133
Grow Room 2 #19807
VWC mean
31.0%
min 1.2 · max 59.4
Daily dryback
13.6 pp
peak-day 52.1 pp (absolute)
Shots / day
1.7
≥2pp VWC step-ups
Substrate EC
2.6
traj 0.2→4.4 (+4.2)
VPD mean
1.35
kPa
Air / Soil °F
77.8
soil 75.4 · RH 59.1% · CO₂ 811
Grow Room 3 #19808
VWC mean
0.6%
min 0.4 · max 0.9
Daily dryback
0.1 pp
peak-day 0.3 pp (absolute)
Shots / day
0.0
≥2pp VWC step-ups
Substrate EC
18.0
traj 23.9→16.3 (-7.7) ⚠️ wide zone spread
VPD mean
1.28
kPa
Air / Soil °F
69.1
soil 68.7 · RH 47.8% · CO₂ 642
Grow Room 4 #19809
VWC mean
24.0%
min 0.2 · max 54.1
Daily dryback
7.2 pp
peak-day 34.2 pp (absolute)
Shots / day
0.4
≥2pp VWC step-ups
Substrate EC
3.1
traj 4.0→1.9 (-2.1) ⚠️ wide zone spread
VPD mean
1.17
kPa
Air / Soil °F
68.7
soil 67.7 · RH 51.1% · CO₂ 710
Grow Room 5 #19811
VWC mean
52.5%
min 43.7 · max 61.4
Daily dryback
14.3 pp
peak-day 16.8 pp (absolute)
Shots / day
2.1
≥2pp VWC step-ups
Substrate EC
5.2
traj 4.7→4.4 (-0.3)
VPD mean
1.41
kPa
Air / Soil °F
77.5
soil 74.9 · RH 56.7% · CO₂ 1212
Grow Room 6 #19812
VWC mean
46.7%
min 28.3 · max 61.5
Daily dryback
13.2 pp
peak-day 31.2 pp (absolute)
Shots / day
1.9
≥2pp VWC step-ups
Substrate EC
7.2
traj 7.5→6.1 (-1.4) ⚠️ wide zone spread
VPD mean
1.03
kPa
Air / Soil °F
76.4
soil 74.9 · RH 66.8% · CO₂ 1088
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 - Ozark specifically. Confirm this is the site in question.