Second floor fish tank in apartment

[Hobbiest]

Hi. I live on the 2nd floor in an apartment. Currently Inhave two 29's and a 44 in one corner of the room. I want to consolidate to a 90. The 90 is heavier than all three of the other tank when all are empty. However the water in the others is more than 80 pounds greater than what the 90 will hold. I have had a 90 on the second floor in a house many times. I have some concern that in the apartment it may be too much. I would loke some feedback on this issue. Obviously I don't want my tank going through the floor into my neighbor's.

[cranialdisturbance]

I had a 90 gallon in a third floor apartment once without any issues. 

[danielratti]

Generally apartments have a cement sub floor so you really have nothing to worry about.

[GrizzlysDad]

Generally apartments have a cement sub floor so you really have nothing to worry about.

x2

Generally most aquariums are less pounds per square foot than your refrigerator because the weight is spread out as opposed to being a small footprint such as the appliance.

[mibwb]

The average weight of a refrigerator is 150 to 275 pounds. A full 90 gallon glass aquarium with stand can weight one thousand pounds or more.

 They're not all solid cement subfloors, could be Gyp-Crete or another lightweight concrete subfloor.  The reason for cement or lightweight concrete subfloor is for a fire barrier between floors. It also depends on when the apartment was built on type of subflooring. Best way to check, is fill the aquarium and see if it tilts away from the wall where you want it.  If it starts to tilt, floor not strong enough or not level.