Sparks wrote:

Before you start ripping tiles off, I would make 100% sure it isn't the
waste!

You say it only takes about 30 seconds to start - try blocking the drain in
the shower with a plug or something, and see if it still leaks - if not, let
the water in the tray go, and then get the mop

Ripping tiles off? Yikes, is that what I'll need to do?

It can't be the waste, unless I have special water than can run up hill

Thanks,

Drew