It has been one year since I had my tub installed. I was a little hesitant when the dealer told me how easy it was to maintain with chemicals. It has an ozenator and a mineral stick, and have been using Spaguard Enhanced Shock once a week and a little after soaking. The levels have been on most of the time. I have changed water 5 times over the year, cleaned filter every other month, and really has been really easy and carefree. I have two daughters with lots of friends over. I usually have to shock extra after them, but nothing else extra. The tub itself has done what it is suppose to do and i find myself soaking about half the time without the jets, so glad I didnt spend all the extra money on the fancier jets. I am sure they would have felt good, but used the saved money to build fence and put in slab. I don't regret the purchase at all and recommend the tub for those looking for a larger tub on a budget.