Can a crack in a sink be fixed?
You might have been happy living with it, but it's a probable red-flag issue.
Acceptable fix - replace sink. If you have a &quot;Habitat for Humanity ReStore&quot; nearby (or some other &quot;thrift store that deals in fixtures&quot;) it might not even be that expensive. Doesn't need to be a fancy overpriced brand but it needs to be intact.
Slumlord fix - epoxy or leave as is. It will never be &quot;right&quot; short of replacement. It will lose you renters with reasonable expectations, as they will smell slumlord when they see that sink at the apartment showing and keep looking - elsewhere.