Just want to say I have had my cantabria since August 16 of 2017 and I just love it. I spend at least once a day sometimes 3x a day in my hot tub. I also do exercises and stretches in it .. Just love it .. Im saying this for anyone trying to make a decision on what type to buy and I have not had one problem, once I learned how to do the chemicals, everything is good now.. Ok enjoy...