Apartment rules/laws

[Wheelman76]

So I bought a pump from a nice woman from Canreef today ,and she is selling everything because she is being told that she is no longer allowed to keep a tank in her apartment. She has lived in the apartment for a couple years if I remember correctly. When she moved in she payed a damage deposit , and was told by the manager that she was allowed to have a fish tank. The rules also say that she IS allowed to have pets. Recently a new manager has taken over and told her that she is not allowed to keep a tank in her apartment anymore. The tank she had running was only a 40 gallon.

Is anyone out there familiar with the law when it comes to situations like this ?
It doesn't seem right that a manager of an apartment building can make decisions like this. This woman is very passionate about the hobby and I feel bad for her that she has been forced to shut down her tank.

Any thoughts ?