I am very pleased with the spa Hot tub,, Made a base from some 100mm insulation board, plus insulation sheet for the base. with a wood frame around it, very easy to setup and use and its been setup now for 5 days, I do turn off at night and back on the day after, at noon, only loss of 5-6c, 3 of us have been using it, and so far we all enjoy. we take shower to make sure we are clean first, and after, the water spot on for Ph level, and 37-38c is perfect 40c is hot, If you look after this hot tub, it should last many years, and its a great price, and better looking than others I have seen,