listen marijuana plants, which I have only been reading / learning about in the past month or so, have requirements for optimal growth right? maybe they prefer it with loads of air in more so than having a passive intake (other people have been telling me so) which is why I was asking about the inlet fan, mainly because a lot of people say that inlet is important. that's hardly stupid. this is the first time i've set any form of extraction fan up.

Lecturing or being rude because someone has questions that may seem obvious to you is not friendly or decent.

It makes you look like a stuck up wanka! so don't be that. Be nice, and enjoy your smoke! who cares anyway. I appreciate your bitchy help I'm use to it (many girlfriends later).