Last summer I had a leak on the bottom of the pool - a few pinhole sized leaks. Those were patched and water was no longer leaking where there had been a visible leak that you could see coming out of the bottom on the outside. This was at the end of summer. I refilled at the start of this season and everything held fine for a while -then I noticed water on the ground in the same area as before. The water has dropped and remained at a certain level for several days. There is no longer water pooling where it was leaking. I am assuming it's right above the water level, unless the algae I now have from no filtration is sealing it ;P Any suggestions on how to find it since it's possibly not below the water and I can't use dye? It's not leaking at return or intake, nor at the skimmer.