Svoberts,

No you're not crazy.

Order the book "Small Scale Aquaculture". It's not expecially technical and shows how to set up your own Recirculating Aquaculture system with items found locally. A lot cheaper than buying a commercial system!

Tilapia are very forgiving fish that can tolerate low D.O. etc. An easy species to work with as long as you can keep the water warm. If you have enough tanks you can actually use the water for climate control itself. Get the book and you won't be sorry. According to the book you can easily hatch your own stock in an aquarium before putting them into your growout tank.

http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/6709/cid/2853

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.