This winter my pool lost a lot of water.I have a agp pool 18ft round.Last season I had to fill the pool more than usual and I am suspecting the liner is leaking.The pool was there when I bought my house and I have been living in this house for 10yrs.I don't remember how old the pool is.I have heard vinyl pool liners last about 10yrs.So I am trying to figure out how much would be to replace the liner so I can make the decision to keep the pool or take it down.Thank you for reading my post.