ok right iv stuck some realy fine mesh over the intake hold .coz soon as you sed bugs ..i went into panic mode
Ok here's what I want you to do.
After you've done this I'd like you to perform a full 24hour test if you don't mind.
Take 2 lengths of ducting from the window to 2 flaps on the lowest part of your tent. These will be your cold air intakes. Screen them.
Hang your filter and fan inside your tent.
Connect the filter to the fan so that its sucking through the filter not blowing.
Now connect some ducting to the fan and send this ducting out of your bedroom if possible. It could be the other side of the window for your intakes. Or it could be out into your hallway.
By doing this you are sending cool outside air into your tent passively as the fan pushes out the hot air. This creates an even flow through your room without any of the air being recycled in anyway while creating negative pressure to allow the air inside the tent to be cleaned by the filter on its way out.
Try to keep duct runs as straight as possible.
If any are curved beyond a 90 bend you loose fan power.
Let me know how the testing went.
You should see a better temperature drop than 78F.
I run my own room 70-75.
J