back to wall toilet

Hi, I have a concealed cistern toilet that seems to be leaking slowly onto the kitchen artex ceiling. Water was going out of the overflow after it was flushed, so I have adjusted the fill level, but I can't see how that would be causing the problem. I am.thinking I will probably need to remove...

Good Afternoon all We are currently renovating a bathroom (in Spain) and having ripped out the old bathroom we are installing a new wall hung toilet (Grohe Rapid SL). We want to increase the depth of the area behind the concealed toilet cistern to incorporate some storage alcoves (approximately...