Planning stages of a new room

[GOT_BUD?]

So in the not too distant future, I will be moving to a house that has an unfinished portion of basement.

I'm planning on running a small grow, and would like to create a lung room. I have an idea in my head, but not sure if it will work as I think.

Completely seal off the grow room minus one 8" exhaust fan that leads into a work/lung room (this would run twice a day for ~15 minutes to "freshen" up the air). The work/lung room would have a fan blowing through an ozone generator and exhausted through an 8" duct that runs through the main floor and is exhausted outside on the roof. I'd also probably have a couple of small (or one large) filtered air intake exposed to the rest of the house. This fan would run 24/7. But I would get a speed controller for it so it wouldn't be running full bore all the time.

The idea is I would create negative pressure in the work/lung room, and leave the grow room sealed for CO2 enrichment. I would be purchasing a ductless AC unit and dehumidifier to control the humidity in the grow room (work/lung room would be too small to house). There would be some air draw possibly coming from the grow room. But since it's completely sealed, I can't imagine much would get pulled from there passively. I could put a damper on that duct to help control that if needed.

Am I way off base with this plan? Or am I spot on?

Any and all feedback is appreciated. Any improvements I can make now are easy do to this early planning phase, so fire away.

 

[Phaeton]

I have a 10' x 10' bud room with a 10' x 20' lung room connected by two 24" diameter filtered holes with 2500 CFM fans blowing into the bud room through the furnace filters.
A passive variable exhaust leads back into the lung room.
During the winter the lung room is kept cool through powered intakes from outdoors. The bud room is regulated by the exhaust opening, the intake fans are full on during the entire day period.
During the summer day/night is reversed and temperature is regulated the same.
AC would be extremely helpful about three weeks per year, not enough to justify.

I measure temps at the leaf and have found I use more air than any comparable garden with similar watts. I also average a thousand watts or more per plant up close and personal, this takes more than twice the cooling six hundreds watts would need.

AC in a sealed room is technology I have not tried, winter in a can.
If I am reading correctly this is to be placed in the bud room?
Curious choice to me (who does not own an AC unit) as my problem is venting the existing heat out. When I used a heat exchange unit inside the bud room through an outside wall opening the hot spots kept winning until the design got changed to the system now used.

Wattage makes a huge difference, double the watts and triple the cooling. A veg room with only a thousand watts is cooled by moving room temperature air through it, never a problem.
The two thousand watt veg room has three circulating fans and a powered intake.
The four thousand watt bud room has been described.

With so many variables the decisions are up to the man on the spot. I expect you will do fine.

My two cents on how much air is needed in my garden.