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.

[milesj250]

in the winter the basement is around 23 c because i use a pellets stove to heat the house.right now i use a lot of top up water and i have to truck my fish water in (high sulphur at home), i hope outside air will help with evap.i will be going from 350 w to about 1000 w of light and i want to help cut down on water i bring home. the in coming air will be coming from under the deck my tool room. i live on Vancouver island and we don't get a winter here, so i think out side air temp should not be a problem.

[mark]

1000w in 23 deg room, I understand.

The cooler outside air will help but moving air over the water you'll still be getting evaporation. A chiller and a closed hood would save water.

[milesj250]

ya the chiller is up on the list of things i need, but it is the winter now.