I think I will need one of these dryer vent hoods as well then, and a 4" hole saw, I dont have one that big in my set.

Mark, did you drill from the inside out, or outside in?

HRV is the way to go. Whole house ventilation, unless one has lots of air leaks and the such.

www.lifebreath.com

Great link, thanks!

Humidex

http://www.canreef.com/vbulletin/sho...hlight=humidex

Cheers,
Vic [veng68]

Pilot hole from the inside, holesaw from the outside.

Mark, think I can make a pilot hole through one of my access panels in the roof.

The dryer vent hood goes into the 4" hole from the outside then?

$1000.00 bucks might seem like a lot and it is but not compared to your house. Thats one of your biggest investments and you don't want it rotting and getting mold. I did the HRV like Tony is going to do from Air Pro, it's the way to go.

When you get 200-300+ gallons of open water in your house you have to do some thing or it will be a problem.

Dave

Will a bathroom fan in my fish room vented outside not work well enough?

My house is old, and crappy windows, so there are lots of air leaks in.

You could also look into these products:

www.humidex.ca

Yea, actually any form of ventilation will work. Just need some make up air coming in. Need to be careful of any heating device, like gas furnace or wood burning devices that require fresh air. One does not want negative pressure in the house.

As long as you vent out stale humid air and bring in some dry fresh air, the idea is the same. However in my climate, without the HRV, the heating bill would sky rocket from heating the cold outside winter air.