We have a Grohe built in cistern which creates a sort of overflow when flushed from the pan, this is a combination of the pan design, and the tall groove cistern creating a bigger pressure when flushed.
I want to try and reduce the amount of water in the cistern to see if this helps prevent the water smiling over when flushed.
Is there a way to do this other than putting something in there to take up space?
I want to try and reduce the amount of water in the cistern to see if this helps prevent the water smiling over when flushed.
Is there a way to do this other than putting something in there to take up space?
