UPDATE! found the leak and some cracks in the top of the skimmer housing, i used phenol red and a long thin piece of clear fish tank pvc air tube to get some red dye in there and watch the water drain, it was a small crack and hole and now i see why so much water was leaking and it was at the top of the skimmer housing where the skimmer white pvc housing meets the tile/concrete diamondbrite pool shell, thank you to everyone for their help and advice

I am going to my local pool store to find some epoxy or something to fill and seal the leak. any advice on what to use and where to get it? (home depot?) i will be fixing this late tonight or tomorrow, thanks agian