It just filters your tap or garden hose water through several stages of filters removing all the baddies. It has an output of "dirty" water and one for "pure" water.
It only makes clean regular old water. You just use it like you would any other water, mix your salt match temp etc.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.