on the aquaponics thing, folks here seem to be split, about half think it is not doable with weather conditions, and the other half seem to say go ahead let him take a stab at it...
his original plan was just for the fish, but doing all this research, it is now,,,well I would have to have pumps for the fish anyway, so why not pump the water to a grow bed.....not sure if everyone here helped or created something else..
Let him give it a shot. If it doesn't work out, it could be an awesome duck pond!
Has he kept fish before? It can be a rather enjoyable pastime, much like chickens. Some fish become quite tame and even recognize people (still like chickens). I don't think I could bring myself to eat a fish I'd raised. I think it'd be a lot easier to eat a mean rooster than a fish. I guess if the fish attacked me . . .