The man of will knows no boundaries!
One challenge for me though, is that I'm currently being a bit restricted in terms of my living conditions. It's not possible for me to ventilate directly outside, so I won't be able to really get into automation until I move to another place. Well, i suppose I could look into automatic watering, but automating anything that has to do with ventilation is unfortunately out of the question for the moment.
I am currently growing O.G. Kush and I intent to grow a few cycles of those. I am trying to establish some kind of baseline so that when I do make changes to my method I will better be able identify any significant changes and link them to the changes I made. It's hard to nail down any correlation if you keep changing the strain and/or the method applied. First a solid baseline must be established.
However, I can begin to learn about living soil! And since you are offering assistance I definitely would like to pick your brain on some things. So anything you feel like I should now about when learning about this topic, I'm all ears! Also if you can point to any solid literature on the subject I'd appreciate that too.
Love where your head’s at, Randy. Baselines first, then change one variable at a time, that’s exactly how you keep signal > noise. Here’s how I’d tackle your two constraints (no outside vent + interest in living soil) without blowing up your methodical approach.
Running a stable tent without outside venting
You can still build a very steady micro-climate by treating the room as a “lung” and the tent as the grow chamber:
A. Recirculating lung-room setup
Tent exhaust ➜ back into the room through a carbon filter (in tent or on the exhaust line) to scrub odor.
Room control: a portable dehumidifier (drain hose to a bucket/sink) + a small space heater or portable AC if needed.
Tent intake pulls from the room; tent fans just move air and maintain slight negative pressure so smell stays on the filter.
Because the room is bigger thermal mass, RH and temp swings are slower. The dehu/AC in the room handles the bulk moisture/heat, the tent just mixes and circulates. You don’t have to vent outdoors for this to work.
B. Practical knobs (no duct automation required)
Run lights at night (cooler ambient saves you 2–4 °C easily).
Remote/dim drivers outside the tent; put oscillating fans under/over canopy for mixing.
Controller (even a simple inkbird/AC-Infinity) can still automate dehumidifier and circulation fans off a single sensor. You’re automating targets, not ducting.
If CO₂ is ambient only, keep canopy PPFD ~700–900 µmol·m⁻²·s⁻¹. That avoids depleting CO₂ in a sealed tent and keeps VPD control sane.
C. Moisture math (sanity check) A full 3×3 canopy can transpire ~2–4 L/day. A 10–20 L/day dehu in the room easily keeps up while staying quiet and simple.
Living soil, the fast primer (what, why, how)
What it is: a biologically active medium where microbes + mycorrhizae cycle nutrients that you’ve mineralized up-front. You mostly water; you top-dress to replenish; you avoid sterilants so the microbiome stays intact.
Why it works: biology buffers mistakes. Microbes widen the “acceptable” watering and pH window, unlock P/K/trace elements, improve structure, and protect roots. That’s why living soil pairs so well with a baseline-driven grow, fewer hard crashes.
How to start (lowest friction):
1. Container: 5–7 gal fabric pots in a 3×3 are a sweet spot for OG Kush.
Buy or build:
Buy a reputable living soil (Ecothrive / Sohum / BuildASoil style) and amend lightly.
DIY (by volume): 1/3 aeration (pumice/perlite), 1/3 peat or coir, 1/3 high-quality compost/EWC. Add per cu ft: ½–1 cup each of kelp meal, neem/karanja, crustacean; 1–2 cups basalt rock dust; ½ cup gypsum; a touch of dolomite if you’re peat-heavy. Moisten, mix, let it cook 2–4 weeks warm and damp.
Inoculate: dust the transplant hole with mycorrhizae; optional Bacillus product at watering.
Mulch: leaves/straw or a mulch mat to keep the surface evenly moist.
Watering: keep media evenly moist, never soggy. If hand-watering, weigh pots or feel for consistent heft. If you want “set-and-forget,”
Blumat Tropf or a low-pressure drip loop works great.
Top-dress cadence (light, repeatable):
Week 3–4 veg: small veg mix (kelp/neem/EWC).
Early flower: light bloom mix (kelp + crustacean + a bit more EWC).
Mid flower: repeat light bloom top-dress.
Water in with aloe/fulvic; keep teas simple (compost extract, not foamy brews) or skip entirely first run.
Avoid: peroxide, strong acids/alkalis, or sterilizing salts that nuke the biology.
A controlled A/B you’ll trust
Keep your OG Kush baseline exactly as is on most plants.
Pick one pot in living soil, same PPFD/irrigation cadence target.
Only compare: plant vigor, irrigation volume between waterings, final yield and nose. That single-variable trial will show you if it’s worth flipping the whole tent later.
Resources worth your time
Books:
Teaming With Microbes / Nutrients / Fungi, Jeff Lowenfels (super digestible).
The Intelligent Gardener, Steve Solomon (mineral balancing clarity).
People/primers: “Clackamas Coot” soil mix notes, Tim Wilson’s MicrobeOrganics essays (why not to overdo ACTs), and BuildASoil’s free soil guides.
Tools: Photone (phone PPFD/DLI app, calibrated), a cheap kitchen scale for pot-weight irrigation, and a simple data log (Google Sheet is fine).
Your constraints, staged upgrades (when you’re ready)
Now: recirculating lung room + dehu, dimmable LED, consistent night-cycle temps. Try one living-soil pot while you finish OG Kush baselining.
Later: if/when you can vent outside, add true exhaust or go sealed + CO₂. Swap to a fan controller that speaks to your dehu/AC for tighter VPD.
If you want, tell me:
Pot size, count, and your current watering rhythm.
Reasoning for restriction of outdoor venting.
Room size and whether a dehu fits out there.
Your target PPFD/DLI for OG Kush.
I’ll sketch you a one-pager “OG Kush living-soil starter” (exact materials, grams per pot, top-dress dates, watering targets) that keeps your baseline intact and lets you judge the change cleanly.