Be very careful when purchasing from this company. They do NOT stand by what they sell. I ordered a Zodiac Nature2 Vision Pro system. My system did NOT contain a mineral cartridge. The box clearly states that a mineral cartridge is included. I have spoken to other owners of the system who have confirmed that new units come with the mineral cartridge. I have seen other retailers who state that new units come with a mineral cartridge. I contacted Namco Pools and they stated that it does not come with the system (though they make no mention on their website that that is not the case, and as I said, the box clearly states otherwise). They state that the website clearly states that it is only a system and that there is no cartridge (I disagree) and that they are not responsible for the failure to include a cartridge. I could agree to disagree on the clarity of the website if they would simply provide a shipping label and a full refund (a very standard practice for online sales), but they refuse to provide a shipping label and cover the cost of the return shipping. What a disappointing experience. I will not do business with them again AND I DO NOT RECOMMEND that others do so either.