How do I tell what kind of Carbon filter I need?

[pot2010]

I have been getting confused while looking through inline fans on what filter I need. I planned on getting this one because I have a small grow going, only 2 plants in a 2'H x 1' D x 1'.5" w trunk.


It's a 180 cfm output fan. I'm taking a guess but since it's 180 cfm does that mean I'd need a filter rated over 180 cfm such as this one?
http://www.htgsupply.com/Product-GrowBright-Pure-Flow-4-Jr.-Carbon-Filter.asp

I had also had my eye on a 95 cfm fan, but I am unsure what type of filter to buy. I'd appreciate any help.

 

[Lowphat]

Ive used that HTG filter before....didnt work that well. Ive since bought a Mountain Air brand filter that worx great.One of the best investments that I made.

Peace
Low

 

[Moz.]

I have been getting confused while looking through inline fans on what filter I need. I planned on getting this one because I have a small grow going, only 2 plants in a 2'H x 1' D x 1'.5" w trunk.

View attachment 2119163
It's a 180 cfm output fan. I'm taking a guess but since it's 180 cfm does that mean I'd need a filter rated over 180 cfm such as this one?
http://www.htgsupply.com/Product-GrowBright-Pure-Flow-4-Jr.-Carbon-Filter.asp

I had also had my eye on a 95 cfm fan, but I am unsure what type of filter to buy. I'd appreciate any help.

you want the fan to have a slightly lower cfm than the filter. if you have a fan with a higher cfm the air would pass through the filter too quickly and the smell might still get through.