help ventilating a simple, economical, medical grow room

scoobiedoo

Active Member
I am creating a grow room for the first time in an unusual environment and would like some help concerning ventilation. It’s a legal medical setup under Vermont’s relatively new “marijuana registry” if I keep 7 or < plants which I intend to do.

Firstly, I heat with wood and cool the house by opening windows at night, using shades, etc. I don’t intend to grow, unless just starting seeds, in July & August when combined heat and humidity can be uncontrollable. I have a de-humidifier, a humidifier, (2) 2’x4’ 6 bulb T5HO fixtures that put out relatively little heat. I don’t want to spend a lot more $ on this setup and would prefer to have ventilation be manually and passively controlled if that is practical.

I am going to use a 9’ x 11’ bedroom and completely cover the windows to discourage advertising what this is. The room ordinarily stays cool in winter just by keeping the door closed even if I have one of the fluorescent fixtures going to start seedlings. But until I got legal the seedlings would go outside in late May before it really heats up here – and the young plants did not seem to mind either the very dry conditions in February/March when a fire is going all the time, or the more humid conditions of April and May when it can be raining nearly constantly and fires are less intense . But now I want to start and finish plants in this room and assume from my readings that I will need an air intake and exhaust to provide a healthy environment for adult flowering plants.

For intake I was thinking of running a 2” PVC into the basement and using the cool (moist) air from there. For exhaust I thought about the dryer type hose going through the ceiling leading to a gable end vent in the attic. But in Vermont, where temps can stay below 32 F for literally months, I wondered if the hose in the attic would just fill with ice and potentially ruin ceilings along with failing to ventilate. I also wondered if a manual open/close gizmo exists for the vent hose as extra heat might be more or less of a problem at different times.

I love growing pot and now I have an opportunity to do it legally and will spend more $ on this project if I have to. So please tell me if this “passive” approach is sensible and practical in my application. Bear in mind I’m probably not going to have more than 4 mature plants in this good sized room and I do want to get the most from them. If replacing the ceiling light with a bathroom fan is the ticket fine. But elaborate and expensive climate control systems would probably not be practical for me as this is not commercial and I am not wealthy.

Many thanks for any suggestions.
:peace:
 
Back
Top