it seems that your name is ross? Nice to find out you are so close.. the setup i am running now is a pilot for an operation I want to build just like yours. Can i come and visit?, I have a million questions about the basement setup under the greenhouse.. didn't see any pics on your Facebook site?
I have been experimenting with temps too, 65F seems to be the threshold for reasonable consumption of food, 70 is way better. I ran the tanks at 82-86 last year through most of the winter to see how much wood i would consume, and to get a feel for fish growth and greenhouse production.
I have also been systematically trialing every crop, annual and perennial, i can think of in system to see what is going to work out when. A few crops that seem to be working. I have had really great results with herbs parsley, oregano, mint, rosemary, basil etc all produce like crazy, and as you know up here fresh herbs are super premium. I had amazing production with figs last year and will be repeating that again this year. I am very interested in perennial production. I think we could be growing strawberries and beat everyone to market by a month or more up here using the model they use in Florida for strawberries.the list goes on..
I do have one question for you, how come you used stainless for the coils in the tanks? I just used pex and it seems to be fine?
also wondering what species of tilapia you are growing?
Caveat, I have not spent considerable time in researching existing models yet, wanted to go into this at the pilot scale with no preconceptions,,,