LED grow tent intake fan

Hi all,

I am new to grow tents. I have 3x3x5 tent, 600W LEDs, 150cfm mixedflow fan connected to 94cfm carbon filter on top and I left one port from bottom open for air intake. Do I need a intake fan there? My intent is to save money and be silent as possible ( As I live in an apartment building with thin walls, my neighbours might get angry about the noise, and smell ofc)

Also another small newbie question. At the flowering stage, should I run carbon filter 7/24?

thanks for help
Marcel

Carbon filter should be hooked and ran the whole time.
600 actual watts of led, or an Amazon "600watt led"?
The fan seems a little on the small side but I could be off.

if you left one port open, the positive pressure will just leak out that, and not thought your carbon filter.


unless I read that wrong.

chakup said:

Carbon filter should be hooked and ran the whole time.
600 actual watts of led, or an Amazon "600watt led"?
The fan seems a little on the small side but I could be off.

Click to expand...

giving the exact specs:
lights: VIPARSPECTRA VT600-S 600W LED (bought via amazon tho)
fan: S&P TD250 extraction fan SILENT, 2 levels, 200/240 m³/h, diameter = 100 mm
carbon filter: CarbonActive 300Z up to 300 m³/h, diameter = 125 mm
Tent: Secret Jardin Hydro Shoot HS100, 100x100x200 cm


Those are what I currently have. So setup includes 1x carbon filter, 1x extractor fan and a small ventilation fan. I am currently at seedling stage so the problem has not started yet. But when the flowering comes I want to be prepared for the smell. I know that carbon filter does the job but while researching I could not find any video or thread talking about intake fan. All they say is that filter connected to exhaust fan which is lead out of the tent via ducting. Also most of the information is about a grow tent with HID lightning. Which produces far more heat than LEDs so I assume the setup must also be different for LEDs.

SoOLED said:

if you left one port open, the positive pressure will just leak out that, and not thought your carbon filter.



unless I read that wrong.

Click to expand...

The tent is sealed and 1 port ( below the tent where intake fan should come I guess) is open. I dont know but isnt that opening preventing the tent from collapsing in itself?


All I want to know is what should I add to my setup right now.
Can you experts please lead me to it? And please dont send any links, I have read many and its all confusing.
What should I do for intake air in this setup (adding another fan means x2 loud which I am not sure about)

Thanks

Exhaust out the top, leave bottom intake open for passive

That led pulls probably under 200w, you'll be fine

chakup said:

Exhaust out the top, leave bottom intake open for passive

Click to expand...

Passive intake means just leaving the port open at the bottom right?

I have a 32x32x63" grow tent. For stealth reasons (noise) , I have a VivoSun 4" 190 CFM exhaust fan drawing air out at the top.
I suppose I could have just left the bottom intake hood open and allow air to be passively sucked in. I was concerned about not enough fresh air being sucked in due to the modest 4" exhaust fan. Therefore, I took a 120mm PC case fan and cinched it to the bottom round intake hood using the draw strings (to hold the fan in place). Works pretty well without the need for another noisey 4" Vivosun intake fan. Keeps temps down too.