Searched and read and searched some more and still unsure so figured I would just ask. Putting up an 18 52 round Intex ultra xtr. Cut grass out of 20' circle. Have spent days leveling cutting the earth down to the lowest point. I'm using a homemade water level as well as a 2x6x10 with a 3 foot level taped to it. I had to remove a number of very large (12" diameter in some cases) roots from a very old tree that was cut down about 10 years ago to get within 1" level of the lowest point. Most of the roots I removed are still completely solid and not a hint of rot yet, I was pretty surprised. While I removed any of them that were sticking up past my level point, I know there may still be a few more hiding an inch or more below the surface in some areas that will eventually rot - hopefully long after the pool wears out. Additionally, while I filled the root holes I did dig out and hand tamped them, I am sure after filling the pool I will still have some wavyness across the bottom surface of the middle of the pool. I am putting 3/4 foamboard under the pool so it will hopefully help make any wavyness a little more gradual.
My question is - if I am randomly up and down about 1-1.5 inches throughout the middle of the pool under the foamboard due to root fill settling and continual degradation over time of roots I couldn't see .. but I make sure all my pavers under the legs are dead level - do you think the results will be acceptable? (More concerned about visually looking round and even water level across the liner pattern as well as safety - I am less concerned if I feel a hump under my feet).
Thanks for any input!
My question is - if I am randomly up and down about 1-1.5 inches throughout the middle of the pool under the foamboard due to root fill settling and continual degradation over time of roots I couldn't see .. but I make sure all my pavers under the legs are dead level - do you think the results will be acceptable? (More concerned about visually looking round and even water level across the liner pattern as well as safety - I am less concerned if I feel a hump under my feet).
Thanks for any input!