Two tent advice

Hi guy's I have two 1.2×1.2m tents and I am getting allot fan nose from the two 100mm fans in each tent attached to 2 carbon filters and I need stealth

I have looked at quiet fans, slincers etc then I had a brain wave and thought why dont i cut 2 holes in the ceiling and mount the 2 fans in the roof and eliminate sound altogether and moisture in the bedroom or could i do it with one 200mm fan in the roof with 200mm duct attached to a y joint reducer ro 2 100mm ducting to 2 tents with carbon filters in each tent?

Thanks

2 things...it's not stealth with a hole in the ceiling. I use ac infinity 6in fan. And even on max it's only as loud as my window ac unit. Can't even hear it with the door closed

You wont get rid of noise by putting it in the ceiling. You will hear it almost just as well because the type of frequency passes easily through most things apart from a lot of mass.

The best way to solve the situation is to buy a quieter fan in the first place or to run much bigger fans on a voltage controlled speed controller turned to lower speed.

Also never run cheap fans because they make other noises that you wont get with quality fans, like rattling, shitty bearings ect.