[Koha] To hide empty biblio records in OPAC

Hi, I have deleted quite a lot of empty biblio records lately, but they still appear in database. Till moment we do restart of index I would like to hide them at least in OPAC. Is it any way in Koha administration to do this or in any other place? Med vänlig hälsning Lukasz Mesek Vuxenbibliotekarie Alingsås bibliotek lukasz.mesek@alingsas.se