Discount Pool Liners

Last Yr I Replace My Liner 25 Gage I Notice A Leak I Thought It Was From A Stone Where We Raked Up In The Sand It Was Sharp So We Pushed It Down Patched It Then I Remove The Cover Only 10 Inches Of Water Left Now I Don't Know How To Find It So One Please Help Me Maybe It Wasn't The Stone Thanks So Much I Had 10 Good Yrs From My Last Liner I Some How Think It Came In Like That I Order On Line Discount Ready To Get Rid Of It Might Be The Last Summer Get To Be To Much Filling The Pool Up Alittle At A Time Now Thanks