Passion is a good thing.
Oxygen is being introduced where and how is what I'd like to know. The chemical cocktails are complex that the large growers are using. They have developed systems that apparently are industry standards in your area.
See what you can find out urbangardner, a lot of Hydroponics in my area haven't found large aquaponics.

I can understand charging for information. There was a time when people from around the world would call day or night demanding I teach them everything I knew for free so they could raise thousands of discus and become millionaire's the fact I had invested many years in developing my system didn't matter to them. When I would refuse they would become rude and angry.