Closet Stealth Grow - Opinions?

Hi everyone,
I'm new to the indoor community but have been growing outdoors for a while. I'm planning on using a spare storage closet under my staircase for a stealth grow. The useable size of the room is 1.5x1m and 1.5m tall.

My only issue is that the entire thing is solid concrete (walls, floor, and ceiling), thus my only way to vent the closet is under the door. I was thinking of 3d printing custom intake/outlet ducts that will force air in/out of the 800x12mm gap under the door. The area outside the door is well ventilated though, and the fan I plan on using is rated to 350m3/h (210 CFM), but i expect this to be much less due to it having such a small gap to circulate the air through.

I am planning on buying 10x SI-B8U463B20WW and 2x Mean Well ELG-240-C1050B to make 2 series strings for 480W of LEDs and about 53000 lux on max power. I plan on automating the entire thing with a raspberry pi.

I would really appreciate your input and any ideas.
Best Regards

Remember any air that gets extracted needs to be replaced or your just creating a vacuum and impeding the fan.

If you've only got a small gap going out then how's air going to get back in?

Since the doors the only thing that isn't concrete then how about putting some nice vents in it top and bottom, higher ones connected to outlet and lower vents for passive intake.

If its a rental then take the door off and store it and put a cheap one on you can do what's needed.

Appreciate you said stealth but blowing all that air out of a 12mm gap is going to be like a leaf blower hitting anything that passes the door.

Thanks for the advice,
Yeah I might do some experiments with using the fan, half of the gap for outlet, half for inlet.

I do like the idea of buying a new door as I am currently renting, the only reason why I said stealth is just because I'm not sure if my landlord would agree with me repurposing the broom cupboard XD.

For sound I intend on using that sound-deadening ducting and putting the fan as far away from the door as possible, hopefully this is enough dampening so that I don't have to listen to it 24/7

Cannabis is legal in SA for up to 8 plants, no selling, so it only really needs to be hidden away once a year when they do inspections, so I could swap doors and pack everything into large boxes when they do come to look.

Best Regards

What is on the other side of the wall? In my closet grow the bathroom is on the back side and I cut a hole in the wall so I can suck air out of the bathroom into the grow room. You can put a register over it to make it look normal.

Three Berries said:

What is on the other side of the wall? In my closet grow the bathroom is on the back side and I cut a hole in the wall so I can suck air out of the bathroom into the grow room. You can put a register over it to make it look normal.

Click to expand...

The walls are solid concrete so there's no way I can modify them, apart from putting in some wall plugs to hang stuff from, im considering asking the landlord If I can put a vent in as the room does smell a bit of old mop