yeah thats whats happening Mark.
James, did you sort out what we talked about the other day ? with the pipes, the pics aint loading so I cant see them
Modified: can now see pictures.
James I said the other day that the problem is the pipes they need to be inline and not like they are this is why you are having this problem mate, water is lazy it finds the easy route always, it have to go up hill with the way your pipes are at the moment and this is why your tanks are not in sync, you should have taps on each tank also