Well only one way to become an expert in life and thats to do it
Power outages are a huge deal with them, while you don't filter you do need water circulation. One horror story I heard was a guy who turned his basement into a reef to rival an aquarium, friend of my office manager, anyways one bad winter storm they lost power and he lost heat. After a few days of trying to keep it warm enough he couldn't keep the heater going for lack of fuel, everything died, including sharks up to 4 feet long. Musta been one hell of a set up.