Power outage

[scherzo]

Whoa, read this and freaked a little since I'm 100 Kms away! Thanks goodness for my Apex.

I still don't have battery backup though.

I have just plugged in a small powerhead into an inverter in my car and ran an extents on cord.

Battery powered air stone is a good option. And as others have said, store the water surface every 15 minutes or so. Depends on your water volume.