Informing one's first wife of second marriage

Thought it is not a precondition for the validity of the nikaah with the second wife that the husband informs his first wife of the nikaah, however we totally discourage performing secret nikaahs as this leads to creating suspicion in the minds of people regarding the man and woman whose nikaah has not been publicized as well as creating a lot of confusion and complications in many masaail i.e. the husband not being able to maintain equality between the wives in regard to their night turns, wealth and other aspects, laws of inheritance in the case of death, etc. Hence, if you wish to take a second wife, you may do so. However, you should publicize the nikaah.

And Allah Ta'ala (الله تعالى) knows best.