hood airflow

[mark]

Guess depends where you are and what type of setup but does seem like lots of effort unless you're planning a large tank and expecting heat humidity problems in your house.

I'm doing sort of what Bassman is considering, pushing cool air from the basement through ducting to the hood them it just exits from the other side. Main reason for the lay out no extra wiring to hood and can have a large fan where I don't heard it when sitting by the tank.