I have a grandson age 11 who was born with brain damage and cannot control his bms. He does love being in the water though. With our little hot tub the draining etc. is a nuisance but doable. His mom is considering buying a home with an above ground pool 16 ft diameter and 4 ft deep. If he had a bm in it, would filtering and chemicals likely be able to get rid of any waste materials instead of needing to drain, clean and refill? Thanks for your input.