i know that ive been tossing out some ideas and upgrade plans like crazy, (ive been getting ahead of myself) but i spent the past 2 days looking into the Hiatt system. (including the "right-now" bacteria and carbon pellets) to help rid my tank of its mild trate problem.. i dont have a probem spending 6 bucks a bottle for the bacteria, but i need roughly 20lbs of carbon (according to the Hiatt site) and i refuse to pay upwards of 120 bucks for the carbon pellets. which leads me to my question, would replacing my dsb in my refugium with the 20lbs of carbon have ill effects on my tank.. i know i still have to do pwc's to replenish trace elements..just really want my trates to stay at 0.