Above ground pool air "Pillow"

[silverwindow]

We just purchased a house with an above ground pool of a pretty good quality. I noticed that the air pillow has been deflated. I was wondering if a pillow is needed. Since it is oval shaped.

Many Thanks

[Guest]

If the water freezes you should use one, it allows for expansion of the ice so it wont break apart the walls of the pool. Another name for it is "Ice Compensator".