Filling pool & sides are leaning inward...normal?

[red2tornado]

We are just putting up a intex 32' x 16' ultra frame rectangular pool. The ground is level as we had this professionally done. We have followed the instructions and have the boards under each leg. As we started to fill the pool which is about 18" of water the sides are leaning inward. The ends and corners are okay. It is the middle section of the sides that are leaning inward.

Is this normal during filling procedure?
Will the sides push out as the water fills up the sides? or what do we need to do to correct the sides from leaning inward?

Please help!!!

 

[tick221]

There have been some other threads over the past month with people reporting the same thing, as the pool continues to fill the outward pressure will cause the walls to push out.

You should be fine, everything is very level though right??

 

[Arkanine]

The sides will suck in from the pressure then push back out.I have noticed that one of the sides of the pool has pushed out correctly the other seems to be lagging behind a bit ,has more of a lean . I'm not sure what is causing this the water is level in the pool.