Our area got hit by a Tornado on Tuesday. We lost power and our estimated time of restoration isn’t until next Wednesday, 8/14. I have a generator but can’t ensure that it won’t need gas while I’m at work - and not really comfortable leaving it running for 8+ hours with no one home. I bought the little battery powered airstones, but doesn’t seem to be enough for my little guys. Any ideas or am I going to lose everything?