I own a gunite pool & spa combination. All Pentair equipment, 2 pumps, electronics, valve actuators, brominator, DE filter, auto fill system, Polaris pressure side pool cleaner and oil heater. I do all my own pool maintenance, water testing, balancing chemistry,.plumbing repairs and pool opening. I leave the pool closing to the professionals since if done improperly, it can be VERY expensive due to underground broken plumbing. For the last 7 years, I have been working for a leading Long Island vinyl pool builder, in business for 45 yrs.