Its kind of late to be asking since my pool is 4yrs old, but I had my pool installed by the pool store. My yard was not level so they had to dig down as much as 18inches is spots to level it out. Once it was up I back filled and wanting to keep the yard the same level I backfilled as much as a foot in some spots. After reading here I see that backing filling that much is a big no no.

So what kind of problems will I be facing down the road? Is it true that this also voids the warranty?

Thanks
John