Navigating back into a sub page of a tab

Hi,

I have a tab in which a navigate to a another page. This stills shows the tabs at the bottom which is fine. When pressing a button in that page i navigate to another page without the tabs. To do this i push this page onto my app.rootNav instead of my navCtrl. This page has no header or anything but just shows a full sized image with an X at the top to go back.

To navigate back i use pop() on the navCtrl and even tried popping the rootnav but both return me all the way back to the first tab and not the previous page.

With best regards,
Robin