I think I own self leveling soil. Last year I installed Intex 14x42. Thought I had the ground level...but once filled it was off...I think if I remember. ..it was off almost one square or 3/4" or so. (maybe an inch)
Anyhow...I said I'd live with it.
Now this year I just opend the pool and it is perfectly level!!!!
Lol....yep....self leveling soil....hahaha
I think what it is.....I live in Florida and the water table level here is very high. (Swamp behind my 2 acres)
One winter I dug down six inches and hit water. Anyhow....a few weeks ago we got flooded badly. So...with the flooding and soft groumd...some how my pool leveled out.
.....just hope one day I don't look out and pool is gone into a sink hole...lol