Description
The weather turned. In this video I show how I'm sealing my reveg room for winter — fan running, heat going in next, and a full plan for keeping the indoor temperature stable as the fall cold deepens. The MediMac is Day 9 into her reveg and she's responding, but a sealed grow room needs more than just a closed door. It needs airflow, a controlled heat source, and a setup that keeps humidity in check so you don't invite mold the way an outdoor grow does in October rain.
I also take one minute to show what late-stage mold looks like on a plant that didn't make it this year — a reminder of why the sealed indoor setup matters — and tease what's coming tomorrow. I'm finally revealing the homemade cannabis seed separator my late friend Mike built, hidden in the next room, and the full seed separation walkthrough drops on Thankful Thursday.
What You'll Learn:
• How to seal a cannabis grow room for winter
• Why a fan matters even in a small indoor space
• When and how to add a heat source to a reveg room
• How to prevent mold once you move outdoor plants indoors
• What late-stage cannabis mold looks like
• Why winter indoor setup is different from summer
About Me:
I'm John Berfelo — 42 years in cannabis horticulture, founder of MedTainer Canada (the Canadian distributor of the patented MedTainer storage container), four-time author, and the subject of a published peer-reviewed case study on natural cannabis and pain control (PMC2740265). In 2005 I was licensed by Health Canada to cultivate my own under federal exemption. I've been on YouTube for 18 years documenting home cultivation.
📘 Books:
Pharma to Freedom — my story and the policy journey → https://johnberfelo.com/pharma-to-freedom-book-page
LEDs: The Keys to Your Growing Future → https://johnberfelo.com/leds-book-page
Smart AI in Cannabis → https://funnels.greenwayai.ca/smart-ai-in-cannabis-book
🤖 Free AI Plant Diagnosis — Greenway Grow Master:
https://greenwayai.ai/the-cannabot-concierge-page
📹 Related Video — The Big Trim Masterclass:
https://www.youtube.com/watch?v=9kceoHzOZtU
🔗 Channel + Playlist:
Playlist → https://www.youtube.com/playlist?list=PL8aHC4zMZ25D9xyqOTqKZTUfY_FK_JCu7
Shorts → https://www.youtube.com/@JohnBerfelo/shorts
Greenway AI → https://greenwayai.ca
🌿 Horticultural Partners (affiliate):
Remo Nutrients → https://www.shop.remonutrients.com/?ref=lz9dh2go
Green Planet Nutrients (code JBERFEL010) → https://greenplanetnutrients.com
Grandmaster LED (code JOHNBERFELO — 10% off) → https://grandmasterleds.ca/?ref=JOHNBERFELO
MedTainer Canada → https://medtainercanada.com
Some links are affiliate links. I earn a small commission at no extra cost to you. This channel is educational content on legal home cultivation under Canadian federal exemption. Nothing here promotes or facilitates use.
Never Stop. Never Give Up. Never Surrender.
Johnny B 🌱
#Cannabis #IndoorGrow #GrowRoom #Winter #HomeGrow #JohnBerfelo