Not if its the BIGEST ONE! No one in their right mind will have reef tanks on their mind. The only tank we will be worried about is a tank full of drinking water. We should always have about a months worth , they say.
I personally like having plenty of drinking water at home, and some in the car as well. The problem with the one in the house is that if the hole house falls; thier goes all the water. I plan on buying a Gang box( for tools) and filling it with water, canned food, med supplies and a change of clothing for my family.