Dave hit the nail on the head, ozone and UV both have their place in pool/spa care, but an outdoor residential pool is not the place.
Some pool builders jump from one "latest & greatest" thing to another. You need chlorine, and not from any solid sources. If a pool builder wants to sell you a puck chlorinator, UV, ozone or "mineral" system you should thank them for their time and move on. The most user friendly chlorine source is a salt water chlorine generator, but some shy away from this if they have or are goi g to have soft stone as a coping around the pool. In that case look into liquid chlorine dosing systems like a Liquidator or,Stenner pump.