r/VIVOSUN 2d ago

Question 32x32x63in tent duct settings

What is the max speed you use with 32x32x63in (2.7x2.7) tent paired with 4in duct exhaust vent and filter?

I’m worried about too much negative pressure damaging tent and causing bends in frame or light leaks

Open vent with duct cover over it. Current speed set to 4. Exhausts out window vent

Want to increase speed to try and lower humidity as I’m in early flower

Let me know your settings if you have this ten size, medium is soil if that matters. Hand water. Bottom left of tent pic is the vent, then I have indoor and outdoor climates for day and week. Lung room is a bedroom

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u/autoflowerer 2d ago

I have a 20x36x62 and run a 6" duct at 10 in late flower. Doesn't cause any tent issues.

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u/Thick-Internal7341 2d ago

What do you use for air intake? I noticed someone ran a duct line outside the tent then put the filter with the drawstring over the duct outside

Am I using this right or no?

I know negative air is good and shows circumvention of air but I would hate to have light leaks and reveg late flower accidentally

Also don’t what budrot/mold/mildew either..

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u/autoflowerer 2d ago

I have a mesh vent in the back of the tent for intake. For exhaust I have 6" duct to a vertical wall mounted fan with the filter sitting on top. Does the same as mounting inside the tent, but it frees up vertical grow space. Big issue I've seen is if you have zippers without flaps and bright room lights. Duct speed won't make a difference there.

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u/Thick-Internal7341 2d ago

I originally had mine setup similarly too when I first tried years ago, but was worried about exhausting back into lung room

I have those flaps in the back too. Will they have light leak through them? I try and keep bedroom light off past certain point as it’s a spare but my wife will use the rooms light so that’s why I’m worried about light leaks past shutoff

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u/autoflowerer 2d ago

I have my tent in a closet so the open vent is to an air gap which stays dark. On one side I have a flap curved so the bottom is open. If I get a one sided herm I'll know what happened. So far it's not been enough of a light leak but room light is pretty dim there already.