I noticed the price of Bio Pellets coming way down and a couple of people here removing them from their system. I thought this was supposed to be the next great thing to hit this hobby. Can anyone explain to me why the craze is dying down??? I understand the whole 15NO3:1PO4 ratio for the bacteria to reproduce. Is this why? Is it because most people are aiming for a 0 NO3-'s and 0 PO4's systems which wouldn't be conducive to having bio pellets in their system. Any input would be nice.