I have an above ground pool and filled it up and the water level went down half way, I then refilled the pool and it stayed full for a week. I then filled it due to the kids playing in it and it once again emptied but only down 1/4 from the top. Still can't find a hole! Can someone tell me please what is going on and how I find an invisible hole?

The only thing I can suggest is letting the water go out all the way and going over the bottom and sides an finding the puncture. There has to be a hole or puncture somewhere, you are not being diligent enough. How much does it cost you to fill up the pool every time this happens ?

Do you know that water is at premium in most countries. My gosh, lady, they are thinking of selling water from the Great Lakes. The largest source of fresh water ON OUR PLANET!!

How about finidng the invisible hole in Lake Ontario, Lake Superior (the deepest), etc. etc.