It may be too late now, but in the future, battery operated air pumps are must-haves for short term power loss, in my opinion. I have three D-cell battery Azoo units, bought incredibly cheaply at Dr.s Foster Smith, an online aquatic outlet. They really are the epitome of crude and ghetto, but a couple of them hooked to two airstones a piece, placed right at the top of the water as to not stir detritus below but provide aeration, will get you through a short term power outage.
I plan to invest in a generator when I own a house in the future.
Good luck with getting through the hurricane. Best wishes for you and Houston.