Also check http://wateroz.com You can check with Lapis (Andreas has recommended it too, but he first mentions another brand, but it was too complicated to order)he has mentioned Wateroz before. I have their calcium, it lasts forever. I just ordered the Water of Life ( more than 70 minerals), it has not arrived yet and I am planning to use that in addition to my greenmax. For me things have to be easy otherwise I won't use it, I prefer not to mix a lot of stuff.