Thank you! I do have an oil heater. I might put it in there for a night or two and monitor it. I’d like to get in the garage. Kinda cramped in house.
@SausageMahoney i would get moved you will like it much better being in area where you can get around more. In my grow I can walk all around my plant’s but i don’t use tents either just one big room with mylar on all the walls lights hang from ceiling happy growing my friend hope this gives you a little push lol
Yes the garage gets cold. Seattle Winter weather.
No heat, except tent equipment.
Tents on different schedules.
Re-circulate air from one tent to another.
Unfiltered exhaust to attic, ensures air fresh exchange for garage.
Filtered air in lung room re-circulate warmed/dried air.
Dehumidifier adds heat to lung room.
Lights ON
I worked up on Mt. Klatskanie and was very surprised to hear that the Pacific NW winter was similar to where I live, due to the humidity. Gosh, it was so beautiful up there. Do you have any issues with the RH? I’ve only done a few outdoor grows. First season attempting indoors.
Where do I begin?
King Tide and Coastal Flooding
Rain Season Sept 15 to June 15
Low clouds or Fog season May to May
Floods or mud slides
Last Month the PNW received a Bomb Cyclone and King Tide
Together they are double-trouble and induce damage
Tree and wind damage took out my grow friend’s electricity for days.
Fall rains mold summer grow.
I am still learning all the distractors.
Two events that were never on my mind or Retirement Radar
Disney and Arlington National Cemetary Funerals.
Dehumidifier in lung room and house, run regular.
First dehumidifier lasted 8-years.
Now, I need two.
Greatest place to live, should you ask.
Read about my journey
@DEEPDIVERDAVE : What is the feature I’ve circled in pink? Air inlet?
I don’t understand the section circled in green. It appears to show a pipe that deadends into the ceiling.
So you have two exhaust fans – one venting to the attic and another venting into the room through a carbon filter? Why?
There’s a third fan shown, blowing from the bottom of one tent into the bottom of the other.
Where does fresh air enter the system?
Lung room is unheated - air leaking, somewhat insulated - attached garage.
Garage doors or garage windows available for opening.
Only killed three rodents in five years in garage.
System designed for attic “exhausting, unfiltered” (Island winds make smell not an issue, usually).
Lung room hosting filtered exhaust (keep smell down for Mrs. Daisy to complain less) and help balance tent temps with lung room-unheated air.
Next design update will include AC-Infinity Inline T8 fan with Big Filter exhausting Tent 2 into lung room or Tent #1 (temp and air stabilization during tent Opposite cycles
Doing my best to grow better.
Forgive my ignorance. Lung room is a clean environment to draw your air from?
Lung room is where tent (s) reside.
I smoke there.
Tents, weed, and me hang out there.
All good.
took 40 years to get legalized, for me.
Here to share and learn, from others.
Gotcha 
. Going on 50 and still illegal 
that cost me 20 years, somewhere.
Got me a nickel. “All that chow hall, at the door.”
@DEEPDIVERDAVE What do you think of this arrangement for the tents?
Exhaust air will heat second tent and raise the humidity for second tent plus lung room
Are you running co2 in this sealed off room that heat doesn’t escape
“Radiator heater” is oil filled, electric, but no flame.
Oil heater could possibly include flame and Carbon Monoxide.
The two are different and one starts fires or kills with fumes.
Exposed coils on “radiant” heater or ceramic, may introduce light during dark cycle.
@SausageMahoney give growing indoors in winter a try (if your legal), is my vote…
The one i use is electric no flame and i pull air out and fresh air from outdoors the little heater i use just keeps it from dropping way down it’s what ever our environment calls for it get pretty cold here so @SausageMahoney might not even have to have one depends happy growing my friend’s