Hello, I now have a fan (187 m^3/h) and a carbon filter (180 m^3/h). they are correct for the size of the closet The fan has the possibility to choose between 2 flow/speed: 145 or 187 m^3/h; my question is: if I choose the lower speed (145), could it be harmful for the fan knowing that the carbon filter has the capacity of 187 m^3/h? thank you in advance