I live in Dudleyville Arizona, which sits on the largest water table in the state. I've got a 55 acre goat farm. With endless supplies of manure I'll build a green house, and use the endless supply of water I can pump with solar power. The idea of excessive evaporation here using a green house really not a factor. Temperture inside the area might be a bigger one. I'm thinking misters or continous spray for a cooling affect. The fish part seems to have alot of issues to affect it . One last year we had 9 degrees here for a week straight which means everything would freeze up big time. I don't know if the 115 degrees in the summer would be another issue. I was think raising Talipia for fish , maybe later.