supposed to take about 3-4 weeks to get the bacteria established, once that happens theyre supposed to reduce ntirates quickly. some people went from 80ppm to 20ppm in 3 days and had 0ppm out of the efluent

i think its a great idea, but they say that the result is acidic water which needs to be passed through the aragonite media.. i think it dissolves it and you end up with alk/cal in dripped in your tank as well? not sure