That is really sad that she lost all her tanks and fish.... I guess there will be a lot of people with issues like this.
I have two 350 litre tanks and so far they have held up. Lots of water on the ground on Saturday, not so bad this morning, but this morning I was watching the tanks from the lounge wobbling with the major after shock today.
When we lost power on Saturday for 10 hours I went and bought a 12 - 230 volt invertor to run one of the tanks. I connected it to the car battery. The other tank I took water out into a bucket, and then boiled some of it in a pot on the gas hob, and then put the water back into the bucket and back into the tank to try to raise the temperature.
The tank dropped about 8-10 degress F over the 10 hours.
At this time no fish have got sick but the Discus do appear to be more timid.
I have an earthquake page on my weather site at http://weather.crowe.co.nz/quake/ which lists the shocks in a graph.
Overall I am very lucky with very minor damage to the property.
chris