Active intake on a 2X4X6?

[indicalla]

I'm gearing up for my first ever grow, awaiting a Mars Hydro 2x4x6 tent. I'll be using an AC Infinity Cloudline T4 inline fan and AC carbon filter for exhaust.

Somehow I missed the fact that the MH tent doesn't seem to have a hole in the bottom for active intake ducting -- only lower flap-covered passive intake vents. Not sure how I missed this. I wasn't planning on starting out with active intake, but I figured I might choose to add it at some point.

How big of an issue do you think this is? I'm wondering if the absence of an intake hole suggests I probably wouldn't even need active intake in a tent this size, but other 2x4s have them, so I'm pretty confused. Thanks in advance.

 

[Death The Cultivator]

I'm gearing up for my first ever grow, awaiting a Mars Hydro 2x4x6 tent. I'll be using an AC Infinity Cloudline T4 inline fan and AC carbon filter for exhaust.

Somehow I missed the fact that the MH tent doesn't seem to have a hole in the bottom for active intake ducting -- only lower flap-covered passive intake vents. Not sure how I missed this. I wasn't planning on starting out with active intake, but I figured I might choose to add it at some point.

How big of an issue do you think this is? I'm wondering if the absence of an intake hole suggests I probably wouldn't even need active intake in a tent this size, but other 2x4s have them, so I'm pretty confused. Thanks in advance.

Why do you believe you might need active intake?

 

[indicalla]

Why do you believe you might need active intake?

I don’t believe that I do; I’m trying to understand if I do. I’ve learned a good bit from the Grow Weed at Home podcast, and the host dedicates an episode to ventilation and advocates pretty hard for using active intake. He also talks about growing in his 2 x 4.

There’s so much to learn when you’re first getting started, and like I said, I wasn’t planning on using active intake to start, but I thought it was possible I’d eventually learn otherwise and I’d wish I had an intake hole instead of a screened vent.

Is it just not necessary because of the size of the tent?

 

[St. Tom]

i thought you would have holes for ducting both sides of your tent i grow in a 1.2x1.2 x.20. but in mine, i use a high power 5-inch rvk fan for extraction and my vents or flaps on the bottom for incoming fresh air

 

[Death The Cultivator]

I don’t believe that I do; I’m trying to understand if I do. I’ve learned a good bit from the Grow Weed at Home podcast, and the host dedicates an episode to ventilation and advocates pretty hard for using active intake. He also talks about growing in his 2 x 4.

There’s so much to learn when you’re first getting started, and like I said, I wasn’t planning on using active intake to start, but I thought it was possible I’d eventually learn otherwise and I’d wish I had an intake hole instead of a screened vent.

Is it just not necessary because of the size of the tent?

You don't need an active intake. Just open lower flaps.

Not really about the size of the tent. Some special situations where it might be needed.

 

[Olderfart]

I'm gearing up for my first ever grow, awaiting a Mars Hydro 2x4x6 tent. I'll be using an AC Infinity Cloudline T4 inline fan and AC carbon filter for exhaust.

Somehow I missed the fact that the MH tent doesn't seem to have a hole in the bottom for active intake ducting -- only lower flap-covered passive intake vents. Not sure how I missed this. I wasn't planning on starting out with active intake, but I figured I might choose to add it at some point.

How big of an issue do you think this is? I'm wondering if the absence of an intake hole suggests I probably wouldn't even need active intake in a tent this size, but other 2x4s have them, so I'm pretty confused. Thanks in advance.

Active intake is not required or advisable in my opinion. On a tent that size, passive will be just fine, and maybe better. For starters, if you overdo an active intake, you could leak smell out of the tent because some air will leak out zips or openings rather than being sucked out though your filter. Trying to balance your extraction and input to avoid this would be an unnecessary pain in the butt. Just my 2 cents worth of course...

You do need circulation fans to move air around in the tent though, that is an entirely different issue.

Good luck with it.

 

[indicalla]

Active intake is not required or advisable in my opinion. On a tent that size, passive will be just fine, and maybe better. For starters, if you overdo an active intake, you could leak smell out of the tent because some air will leak out zips or openings rather than being sucked out though your filter. Trying to balance your extraction and input to avoid this would be an unnecessary pain in the butt. Just my 2 cents worth of course...

You do need circulation fans to move air around in the tent though, that is an entirely different issue.

Good luck with it.

Super helpful post. Thank you!

 

[Mañ'O'Green]

Super helpful post. Thank you!

I see no need for active intake as the others have pointed out. If you can mount the fan motor and the carbon filter outside of the tent it will give you more use of the space inside. It will be noisier and if too noisy put the fan motor inside the tent with the filter outside.

Have fun it is an exciting time!

 

[MrAutoGrower]

Bumping this thread my bad.

Did you use active intake? I have a closet the same size. Cfm calculator said I need to Move 150cfm. My exhaust moves up to 245 apparently but humidity is still crazy high in flower. I only have a hole as intake so it’s passive. Surely a tent or closet this size requires active intake

 

[Death The Cultivator]

Bumping this thread my bad.

Did you use active intake? I have a closet the same size. Cfm calculator said I need to Move 150cfm. My exhaust moves up to 245 apparently but humidity is still crazy high in flower. I only have a hole as intake so it’s passive. Surely a tent or closet this size requires active intake

you aren't exhausting enough out of the closet itself. If there is a gap at the bottom of the door and your exhaust fan is actively pushing air out of the closet then humidity should be getting close to your ambient humidity outside the closet. You should feel air being pulled into the closet as well.

What does your exhaust system look like? What are your temps and humidity like?