I think I research this unit a while back ago. Expensive unit is my first thought. I remember watching one of their videos and some of the things they say are false, so I moved on to other equipment. I won't trust anybody who advertise false statements.
If you're running a freshwater tank, then its better and cheaper if you do water changes instead of buying the Aquaripure.
If you run a saltwater tank, then there are better methods for exporting nitrates.