Obviously the aquamedic approach failed due to inferior marketing because I have not heard of it either
I have been on the NP BioPellet bandwagon for over a month now and can report pretty much the same results as, it does work to reduce nitrates. The latest tell in my tank is the last patch of cyano that I could
not rid myelf of for the life of me. Everyone said coral snow helped with it but after 3 months coral snow it did not budge. 1 month of bio pellets an it is no more :-D