I called Clemson Ext office
https://www.facebook.com/UnionClemso...hoto&sk=photos
They had lots of good info. They gave me a Clemson U contact that has a greenhouse using aquaponics.
https://www.facebook.com/ClemsonAqua.../photos_stream
I am going to contact them and see if I can go over there and see how it all works.
Here are a couple pictures of a build they have.
This does not look to bad to build.