In the last couple of weeks I have noticed a "bubble" in the center of my pool that seems to be growing. I have a 30' Dia. Pool that the center of the pool feels like water under the liner and seems to be growing, two weeks ago it was a small spot that seemed mushy now it's almost a ten foot dia of mushy with a ton of wrinkles that wasn't there before. As a newer pool owner the biggest issues I've had was keeping it form going green... Now this. Any info is good info at this stage!!

The water in your pool puts many tons of pressure down onto the botton of the liner. If you have a bubble it is not from a leak in your pool but maybe a something in the ground. How long has the pool been on the ground and who installed it?

The pool has been installed for about 4 years before we bought the house and we've lived here for 2 years and as far as I know without any issues.