Hi Gregw, 'Sorry'...some how, I missed 'welcoming you' to the forum...

If your interested in commercial....check out 'Freindly's aquaponics' in HI. Also 'Green Acres Organics' in Brooksville FL.
They both are 'succesful'...they do have manuals for self-study, and they have classes too. Great tax write off, for your new buisnes...

Friendly's will tell you, they make most of their money from the veggies. Yes, they sell their fish, and even raise freshwater prawns, but the veggies are where the money is.

The ladies (Gina and Tonya) running Green acres, went to Friendly's classes in HI. They used what they learned, and built a very nice system. Thery are doing so well, they are doubling their system.