That was a great podcast Dave and Trish, I really enjoyed it. I love the concept of aquaponics and have used it for years in ornamental ponds, it's the same idea as a skippy filter for a pond. However, you need fish that poop a lot for the plants to do well and right now I am keeping only small tropicals in my ponds. I use the water for plants but it isn't complete enough or have enough nitrates in it to be used hydroponically.
On the podcast you said that you took a video of the farm including the greenhouse and hydro tank. Where is that video? I looked for it but couldn't find it. I'd love to see it.
Great work, I might even say 'brilliant'