I have new/last year 18x36 vinyl pool. Its seems like i am loosing allot of water.. Was just wondering what a normal evaporation rate would be.. with no one in the pool about how much would a person loose.. I am thinking that i have a leak somewhere. I cant see where it is leaking and no bubbles in the liner...i have not done the bucket test. but was just wondering what a normal evaporation rate would be... i live in eastern wash temp is around 90 and very dry..