Hairline Crack in Spa

Apr 10, 2008
My Spa has a Hairline Crack that extends from where the return drain line comes in, up across the bench seat and then fades as it approaches the tile. The pool is about a year old. I contacted the pool builder and he said it wasn't an immediate problem but to wait and see what it does. Cosmetically, it is not that big of an eyesore...Do I need to be concerned? Thanks