From what I was told Mr. Amano uses mats under his tanks. That is what saved his tanks from the earthquake that hit Japan. I was told the entire building shook but no tanks broke let alone cracked. What saved the tanks from cracking and breaking, the mats. Now there was a lot of water that spilled from the tanks but the tanks themselves were alright.
and he has some serious tanks that could break spewing thousands of gallons of water.. i'd hate to clean that mess up