we have them in california, its never really been an issue, i guess it could shake loose some pieces of coral or non sturdy pieces of rock. As long as it isnt HUGE you should be in the clear
we have had 2 of them here in Arkansas in the last couple months not major ones though.
The one that hit Hot Springs county last night is a strange one because the USGS cant find any fault lines anywhere near there but did determine it to be a quake. The new madrid is the only close fault in the north east part of the state so who knows you might be reading about a volcanoe erupting in Arkansas LOL
Mike
I live where the big black dot is as you see I am right in the middle of 4 in the last 5 months.
BTW tank hasnt been effect but these were all under the 3.0 mag.
Mike