Setting it back up
I modded the Tunze ATO by breaking off the sensor holder and epoxying it to the glass. The emergency shut off float switch is actually sitting next to the unit's brain in a metal lip under my desk. Not the safest thing in the world, but I've had a perfect track record with those sensors working properly, so I'm not too worried.
There, all done! Wait, something's missing...
Oh right, water.
It takes less than 2 and a half of my red bucket (which is around 3 gallons) to fill this thing up
All done for real this time. The tank will look like it never happened in an hour
