Quick question about ventilation

Im using a 144m3/h muffin fan for my 155m3/h carbonfilter through a 30inch ventilation hose. The muffinfan is in a sound isolated box.

Im wondering how much suction power i lose considering the vent hose and the box. The air is barely sucked in through the carb filter, but maybe thats normal cause its huge. The filter doesnt seem near its potential, so im thinking about buying a T or Y connection so i can connect another muffin fan but i dont want the cannabis "stench" to leak.

Any ideas?

Bump

Is this really a hard question?

i dont know about the whole the stench not leaking when you turn your fans off, but adding some more cfm may just help you with your filter problem. and if the fan is mounted inside the sound box im sure your getting a little bit of resistance in your air flow.

My fans are never off, but if the airflow is higher than the filters capacity it will start to leak.

And it seems a little low now, thats the problem