My above ground pool has a small (I call it a sink hole) appearing under the outer edge of the liner. About 6" across at the top down to 1" at the bottom and maybe 4" deep. Cant see any signs of it on the outside of the pool at the bottom, everything there appears normal looking. I am wondering if it will eventually suck a hole in the liner. The pool has been installed 6 years now. Any suggestions or opinions would be greatly appreciated.
Thanks Joe