Anyone raising fish indoors?

[solidwoods]

Were building a building this yr. It is to cover our sawmill and will have a lumber drying kiln on the south end. Off the south end wall I want to make a green house along the length of the bldg. It will be 50' x 16' and face south on its long side.
The kiln will be the north wall of the greenhouse and vent its hot moist air into the green house.
I want to raise fish in a tank built in the ground (on the north side wall)
I've been studying rock bio filters and hydroponic type filtering of the water for nitrogen removal.
Anyone else raising fish indoors and have any pointers?
Talipia seems to be a good start.
Eventually we will build a 5ac pond and I'll use the indoor tanks for season extension and raise the fish in cages in the pond.
I use a woodfired water heater for heat (lumber kilns/shop/house)
Thanks
jim

[Silvercreek Farmer]

I got my tuna up to 250 or so, I am waiting for 300 before I slaughter.

[holleegee]

http://www.backyardaquaponics.com/

Here is a great aquaponics website.

[Blair]

A few sites I've found of interest:

Northern Aqua Farms

Barrelponics

Backyard Aquaponics

Southern Regional Aquaculture Center

AquaNIC

This will give you a few ideas.