What worked best for me in tents takes a little creative engineering but isn't difficult. It works if you are in a spare room or somewhere near an central a/c vent.
1. Pop out the vent cover.
2. Take the same type of part that is used to direct airflow to the vent from the ducting below. Like this:
View attachment 2200913
Insert into the vent opening inverted. Seal with caulk if possible but maybe not necessary
3. Attach the corresponding size ducting. It should be big enough to accommodate an inline fan appropriate for your tent. Seal with duct tape.
4. Place an inline fan in the lower hole of your tent. Attach the ducting and seal. Secure the fan in place.
5. On the opposite side of your tent, place a lower power fan in the upper exhaust opening.
I used an enclosed reflector so you may need to modify at this point.
6. Attach exhaust ducting to the opening of your reflector on the same side as the exhaust fan. Attach the other end to the exhaust fan and seal.
7. Keep the other reflector hole open to pull cool air through to the exhaust.
I didn't use a scrubber so you may need to adapt this to your set up.
This worked with a 600w HPS in the mid-Atlantic region. I know people are using LEDs now but it should be easily adaptable and even more effective. Just keep an eye on your humidity with the cold air coming into your tent if you do hydro.