Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
Parameter | Target Value |
---|---|
Mist ON | 2 sec |
Mist OFF | 3–4 min |
EC | 1.2–1.4 |
pH | 5.8–6.0 |
Canopy Temp | 24–28°C |
Root Temp | 22–26°C |
RH | 70–75% |
VPD | 0.8–1.2 kPa |
PPFD | 18/6 or 20/4, PPFD 300–500 |
Parameter | Target Value |
---|---|
Mist ON | 1.5 sec |
Mist OFF | 5–6 min |
EC | 1.6–1.8 |
RH | 65–70% |
VPD | 1.0–1.3 kPa |
PPFD | Switch to 12/12, PPFD 500–700 |
Parameter | Target Value |
---|---|
Mist ON | 1.0–1.5 sec |
Mist OFF | 6–8 min |
EC | 2.0–2.2 |
RH | 60–65% |
VPD | 1.2–1.4 kPa |
PPFD | 12/12, PPFD 700–900 |
Parameter | Target Value |
---|---|
Mist ON | 1.0 sec |
Mist OFF | 8–10 min |
EC | 2.2–2.4 |
RH | 55–60% |
VPD | 1.4–1.6 kPa |
PPFD | 12/12, PPFD 800–1000 |
Parameter | Target Value |
---|---|
Mist ON | 1.0 sec |
Mist OFF | 8–10 min |
EC | 0.2–0.4 (RO water or light flush) |
RH | 30–55% |
VPD | 1.5+ kPa |
PPFD | 12/12, optionally dim to 80% |
Incorporate this idea…
View attachment 101361
Some of the roots are looking much better. Whites showing a lot more.
Some better than others, surprised I'd not have more of an issue.Some of the roots are looking much better. Whites showing a lot more.
""High-Pressure"" Aeroponics Crop Steering Calendar
Week 1–3: Vegetative Stage
These parameters are basically right on the spot, from ChatGPT.
Focus: Explosive vegetative growth. Roots should stay consistently moist with little to no dryback.
Parameter Target Value Mist ON 2 sec Mist OFF 3–4 min EC 1.2–1.4 pH 5.8–6.0 Canopy Temp 24–28°C Root Temp 22–26°C RH 70–75% VPD 0.8–1.2 kPa PPFD 18/6 or 20/4, PPFD 300–500
Stage | Mist ON (sec) | Mist OFF (min) | EC (mS/cm) | RH (%) | VPD (kPa) | Root Temp (°C) | Canopy Temp (°C) | Light (PPFD µmol/m²/s) |
---|---|---|---|---|---|---|---|---|
Week 1–3: Vegetative | 2.0 | 3.5 | 1.2–1.4 | 70–75 | 0.8–1.2 | 24 | 26 | 300–500 |
Week 4: Transition | 1.5 | 5.5 | 1.6–1.8 | 65–70 | 1.0–1.3 | 23 | 25 | 500–700 |
Week 5–6: Early Flower | 1.2 | 7.0 | 2.0–2.2 | 60–65 | 1.2–1.4 | 22 | 24 | 700–900 |
Week 7–8: Peak Flower | 1.0 | 9.0 | 2.2–2.4 | 55–60 | 1.4–1.6 | 21 | 23 | 800–1000 |
Week 9–10: Ripening | 1.0 | 10.0 | 0.2–0.4 | 50–55 | 1.5+ | 20 | 22 | Dim to 80% or maintain as needed |
Ingredient | Function | Dose (per 24oz) |
---|---|---|
Soluble Kelp Powder | Hormonal boost (cytokinins, auxins) | ~0.18 g (1/16 tsp or pinch) |
Mr. Fulvic | Chelator + uptake enhancer | ~0.7–1 mL (1/5 tsp) |
Tween 20 (or Aloe) | Spreader/wetter (non-ionic) | 0.5 mL (10–12 drops) |
Clean Water | Carrier | Fill to 710 mL (24 oz) |
Stage | Frequency | Time of Day | Notes |
---|---|---|---|
Early Veg | 2× per week (e.g., Mon/Thu) | 15–30 min before lights on | Encourages strong root & leaf development |
Late Veg | 1–2× per week | Same as above | Watch for stretching; reduce if too vigorous |
Early Flower | 1× per week | Optional: spray on transition day (flip day) or Day 3–5 | Use only if pistils are not fully formed |
Mid Flower | Stop spraying | — | Foliar sprays discouraged—risk of mold |
Late Flower | Avoid | — | Absolutely no sprays near harvest |
Day | Defoliation | Nutrients / EC | Environment | Light (PPFD) | Notes |
---|---|---|---|---|---|
0 | Minor defoliation done | EC: ~1.6–1.7 | N:K ~1:2 | Add a bit more K via K₂SO₄ | 77°F, 60% RH (VPD ~1.2) |
1–3 | No defoliation | Maintain EC; begin backing off N, increase K & micros | Slight dry-back period (HPA = shorter mist durations) | 350–400 | Stretch begins; observe internode spacing |
4–6 | Optional: prune new large leaves if blocking colas | EC: ~1.8 | Add small Mg bump if leaves pale (Epsom) | RH: 58%, temps 78–80°F | 400–450 |
7 | Health check only | EC: 1.8–1.9 | Steady Ca, Mg, K | Check root health under HPA | 55–58% RH, ~80°F |
8–10 | No leaf removal unless airflow blocked | Optional kelp + fulvic foliar (light AM mist only) | RH drop to 55%, keep good airflow | 500–550 | Let tops form; reduce mist frequency |
11–13 | Evaluate again for shading | Begin ramp to flower ratio: less N, hold Ca steady, keep Mg/K climbing | Reduce misting duration if roots vigorous | 52–55% RH | 550–600 |
14 | Prep for Day 21 defoliation | EC: 1.9–2.0 | Final boost to P/K using K₂SO₄ and flower-leaning ratios | RH: ~50%, temp 78°F | 600 |
Day | Defoliation | Nutrients / EC | Environment | Light (PPFD) | Notes |
---|---|---|---|---|---|
21 | Main defoliation: remove inner fans, shaded budlets, bottom 1/3 larf | EC: 2.0–2.1 | Focus on K, P, Ca — reduce N to ~80% of early flower level | RH: 48–50%, 78°F | 600–650 |
22–24 | Let plants recover | Maintain ratios; ensure CaNO₃ is still present to prevent blossom-end rot (especially in fast growers) | Dry-back periods slightly longer (less frequent HPA pulses) | RH: 48%, light breeze | 650–700 |
25–28 | No more defoliation unless airflow issues | EC: 2.1–2.2 | Add K₂SO₄ + MgSO₄ if seeing any leaf edge curling or pale buds | Lower RH: 45–48% | 700 |
29–31 | Optional: leaf thinning only if stacking is too dense | Keep feeding P/K heavier; reduce N to 60–70% of max | Maintain VPD ~1.3–1.5 kPa | 720–750 | Smell and resin should pick up |
32–35 | No defoliation; let plant fill | EC 2.2–2.3 (max) | Lower RH 42–45%, temp ~77°F | 750–800 | Peak bulking, pistils darkening begins |
36–42 | Light leaf pull if needed | Begin stabilizing formula (maintain, don't climb EC) | Maintain RH <45%, increase airflow | 800+ PPFD if no bleaching | Resin thickens, density increases |
Stage | Canopy VPD | Target Root Feel | ON Time | Suggested OFF Time | Trigger to Adjust OFF Time |
---|---|---|---|---|---|
Early Flower(Days 0–10) | 1.2–1.4 kPa | Slightly moist | 2s | 2:15–2:30 | Roots still wet after OFF time? Increase by +10s |
Stretch Phase(Days 11–20) | 1.3–1.5 kPa | Damp, not dripping | 2s | 2:30–2:40 | Root zone too cool/wet = increase OFF time |
Mid Flower(Days 21–35) | 1.4–1.6 kPa | Touch-dry at end of OFF | 2s | 2:40–3:00 | Roots drying too fast? Decrease OFF by 10–15s |
Late Flower(Days 36–50) | 1.5+ kPa | Cool & almost dry | 2s | 3:00–3:15 | Leaf edges curling = possible underfeeding or dry-back too long |
interesting, been thinking about itI was picturing your setup sitting on top and the jets just above the first liner that has the mesh. Wouldn’t need the last divider insert.
So you’d have the water droplets from the spray nozzles but then a finer mist from the heat and natural convection.
IDK, just saw it as being a useful idea to your project.