Hello, we are in Florida with no electricity due to that blankety-blank hurricane Irma. We have limited power with generator, but also with limited propane. 90 gal fish with few kenya trees a Sailfin, Yellow tang, 2 small clowns, 2 chromis are survivin with intermittent power from periodically running the generator. Any creative ideas for keeping the water oxygenated if we run out of propane before the electricity is restored? Thanks for your thoughts!