Avoiding Sweating Brick Walls (condensation due to temperature differential)? How?

I live in the tropics and I am building a flowering room next to a drying room and hall ways, separated by a brick wall. When the flowering room is in the 80F range and drying room in the low 60s F range, I worry that moisture will collect on the wall of the flowering room and lead to a humidity problem. I also expect it will collect in the hallways outside the flowering room in late flower when the temperature differential will be high.

Is there some kind of moisture barrier or insulation that I might place somewhere to avoid that condensation on the wall please?

Here, the easiest and cheapest type of insulation I can access is the following style:

point a fan at the wall so condensation cant build up.

It's recommended to clad the bricks with pink closed cell foam, then frame a wall 1" away from that foam and insulate with pink stuff

If you just put something over the bricks it'll still condense behind and cause more mold issues.
Dehumidifiers are your friend. Not your wallets friend but if you want to avoid black mold in your house potentially causing structural issues and health problems 'cheap' is not the way to look at it. 'properly' is more what I'd be going for regardless of the cost. If it's known you had a grow in your basement, and mold was caused because of it expect the value of your home to drop drastically. Also, good luck with insurance.

I used to (still do occasionally) reno basements.
I've also worked in many commercial buildings and hotels etc (steel stud framing, insulation, fireproofing, boarding and taping). So I have a clue about what I'm talking about.

Overgrowtho said:

I worry that moisture will collect on the wall of the flowering room and lead to a humidity problem.

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You have it the wrong way around. You have a humidity problem that causes condensation. The water is in the air, cools down at the wall and condesates.
Mold is perfectly happy to grow with relative humidity above 80 %. It does not need condensation.

Yeah thats true, but either way I need solutions. Does anyone know what the pink closed cell foam is called?

How is your ventilation set? Moreover the exhaust. Can you direct the exhaust flow to an area where it can be vented out? Perhaps no reason to settle with temporary solution or insulate a whole wall.

No ventilation, we doing sealed Co2

Overgrowtho said:

No ventilation, we doing sealed Co2

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Dehumidifier army, or insulating with the original starting point of the problem remaining.

If you live in the tropics keeping a drying room at 60f must be costly. Why not build a smaller drying chamber that’s properly insulated inside the room? It would be cheaper to maintain the environment, probably dry and cure better, and solve the condensation problem.

I just construction glued the pink 1” foam on the wall covering it and was good for flowering for many yrs in that room, had to remove in the summer as I needed the cooling from the cement wall then reinstall in winter. Worked