Arron - It's kind of amazing how well fish & invests do when put out side and left alone. When I had my concrete pond in the late 80's we had a month plus of high 90's & 100s here in the Chicago area. I moved my african cichlids & angel fish out into the 300gl pond. At the end of summer I had more fry than I new what to do with. I put them all in a 20l and it took several weeks to figure out exactly who was who.
The most interesting was the angelfish jumping out of the water to get mosquitos.