Setting up two inline fans in a tent

Also, does anyone know how much noise a Sunleaves WindTunnel 4" inline fan makes? Will using any particular kind of duct help to muffle the sound of the fan?

I used the same size tent for my first two grows. A 4" fan and carbon filter are not going to cut it. Here read this: http://www.bghydro.com/BGH/static/articles/0606_vent.asp

A four inch fan makes about as much noise as a microwave.

Thanks for the info. Will two 4" inline fans along with 2 clip on fans be sufficient? One of the 4" inline fans will be for the hood, the other for the carbon filter.

I need more information in order to give a better reply.

What size light are you using?
How many plants are you growing?
What medium are you growing in?

If you look at my profile's pictures and some of my previous threads you can see how I set my tent up.

3 to 4 plants in the Secret Jardin using 400w HPS and MG lights. I'll be growing in soil for the time being.

Red.Orm said:

3 to 4 plants in the Secret Jardin using 400w HPS and MG lights. I'll be growing in soil for the time being.

Click to expand...

It's difficult to say for sure because there are so many variables. My first inclination is to say no; two four inch fans will not suffice.

I say that because like you, I have a 4x4 tent. I am currently vegging some babies under a 250w HPS and the temperatures in the tent with a four inch fan stay around 90f. You want to try to keep the air temperature lower than 85f.

A four inch carbon filter and fan is not going to be enough. I've used a similar set-up before and was disappointed by its performance.

I suggest that you purchase two six inch fans for your ventilation. I've had perfect results with my rig, but as I started to say earlier; every grow is different and if you're setting up for the first time the only way to find out it to guess and check .

I run 1x600w cooltube, 5" fan extracting from the room through the carbon filter and a 16" room fan, temps good!