Hi,

I have a 100,000 litre above ground pool, installed sometime in the 80's. It's all concrete, with a vinyl liner. This year, for some reason, it seems to be using more water than usual, and I'm wondering if I have leak somewhere. There's no visible sign of a leak, but of course all the plumbing is underground (ABS). Does anyone know how I might check for a leak?
Thanks,
....... john