However if you have a larger grow tent or are using a grow room you would probably need a larger 10 12 fan.
Inline fan grow tent setup.
There are many grow tent ventilation setups you can consider.
I won t write out all the math but i ll use the same method i used for the 4x4 grow tent above one carbon filter and one 90 degree duct bend.
That said the recommended approach is to hang the fan and filter inside the tent.
Therefore you need to install an inline duct fan to get rid of exhaust gases and odours.
The only issue with grow tents is that they have poor air circulation.
How to set up your carbon filter.
What size fan is needed for other grow tent sizes.
On an average if you are using a grow tent which is about 4 4 or 5 5 a 6 inch inline duct fan would be the best grow tent fan for you.
There are 2 ways you can set up your carbon filter based on whether you re using air cooled hid lights or not.
Passive systems will actually not use an intake system.
Instead the inline exhaust fan will suck the air out of your tent creating a vacuum.
During this step it s time to get the grow tent ventilation setup.
In this case the best way is to connect the carbon filter to the intake of your exhaust fan inside your grow space grow tent.
Installing an inline fan shouldn t be rocket science.
A grow tent with the aforementioned dimensions will need an inline fan of about 4 inches most of which have a cfm of about 190 more than enough for the tent.
There are two ways you can set up the intake system for your grow tent.
It s the point where most have a challenge but it s a simple procedure.
For the majority of grow tent growers a passive intake system works perfectly.
For those using a smaller grow tent look for a 4 fan.
So for a 4x4 grow tent with an area of 106 cubic feet a grow tent fan inline fan rated for 200cfm would get the job done.