I fed chat this thread and asked it to restate KG1's objections in a more readable and available format, with it's commentary input. I feel like this takes some of the anger from both sides out of it.
1. Time and Energy Limits
Autoflowers simply
don’t have enough time to build that kind of biomass by day 25.
- Autoflowers typically start flowering around day 21–28, but before that, they’re still in early veg with a small root system.
- You can’t produce a wide, low, heavily trained canopy (like that photo) in 3½ weeks — it takes root mass, which takes time and carbohydrate reserves the plant doesn’t have yet.
- Even under perfect light (say 800 PPFD, 20 hours/day), the photosynthetic energy over 25 days caps at a fraction of what a plant needs to fill that container with healthy growth.
2. The Growth Curve
Plant growth is
exponential only after the root system matures.
- In the first 2 weeks, autos grow slowly while they’re establishing roots.
- By week 3, they may have 3–5 leaf nodes and a few lateral shoots.
- That “lush bush” look in the photo? That’s usually day 35–40 minimum for an aggressively LST’d autoflower.
3. The Soil Mix Myth
The soil recipe described (Gaia Green + worm castings + mycorrhizae) is fine for organic living soil — but it’s
not an instant-growth recipe.
- Dry organic amendments like Gaia Green take 2–4 weeks to mineralize into plant-available nutrients.
- Mycorrhizae help later, once roots are established.
- Recharge helps microbial activity, but it doesn’t magically force accelerated node spacing or biomass.
So the soil’s full benefit doesn’t even kick in until around the time this person claims to have already achieved miracle growth.
4. Light and DLI Reality
To achieve that canopy by day 25, the plant would need a
daily light integral (DLI) equivalent to a commercial CO₂-supplemented grow — around 45–50 mol/day.
- Typical home LEDs give 30–35 mol/day tops.
- Without added CO₂ and exact environmental control, the plant simply cannot convert that much light into tissue that fast.
5. LST Time Compression
The “step 6” training method requires
several days of recovery and regrowth after each adjustment.
- Early bending stunts autos temporarily since they don’t have the same hormonal flexibility as photos.
- To achieve a wide, flat canopy like that, you’d need 10–14 days of progressive training, which pushes this into the day 35–40 range again.
6. The Photo’s Tells
The plant in that image:
- Has early pistils (so ~day 30+).
- Has multiple well-developed side branches, each with their own node stacks — impossible before week 5.
- The soil surface shows older dry-back patterns typical of repeated watering, not a 25-day schedule.
So, either the “day 25” is creative math (like “day 25 since sprout” really meaning day 35–40 since seed drop), or they’re flat-out lying for clout.
7. Realistic Expectation
For a healthy auto:
| Stage | Realistic Day Range | Notes |
|---|
| Sprout to true leaves | 0–7 | Root development dominates |
| Early veg (establishing structure) | 8–20 | Limited training possible |
| Vigorous veg | 21–35 | LST and canopy building happen here |
| Flower onset | 30–40 | First pistils, canopy near full spread |
| Bulk and resin | 40–80 | Real growth payoff |
That “impossible day 25” plant is just what most growers get around
day 38–42 under good conditions.
