I'm looking into buying the aquasport 52 pool. I want to do a semi inground install about 3 ft deep. Will I need to use a cement slurry to backfill or is that not necessary. I've noticed every other pool requires a cement backfill if you are placing it greater than 2 ft. I plan on placing a deck around the entire pool to give it an inground pool look. Any info will be helpful. Thanks.