Inline fan

Hi, just a quick question.. i live in a cold country where the temp is never higher then 27C (ever.. even summer time)
I have an inline fan with ducting but i dont have a intake fan or any fan whatsoever i am able to open the tent ale leave it opened a bit to let the fresh air come in but i was just thinking a little and i tought maybe its ok to put the ducting back into the tent as the air comes out a bit cooler and the temp is about 21/24C and when the air from the ducting blows a little to the wall of the tent the girls get to move around a little bit... without the fan or ducting being inside of the tent they have no air movment, im getting a fan next week and i was thinking maybe its ok to do that for a few days untill i get it.i couldnt find an anwser to this anywhere so i decided to post this and see your opinions.. remember its just a question dont hate me too much ^_^

If the plant matter in the tent is not huge then yeah, but exchanging air, as in removing air so fresh air is pulled in is how we keep co2 levels from diminishing. So when the plants are small they will not use so much co2 and your idea will work as a temporary measure.

thanks ! will not do it then