its been a month now im running my bio-pellets along with phospate plus a bag of carbon in my sump, i can't tell if this works for my tank a few of my sps starting to bleached out others seems doing ok showing a sign of color its comming back. now im worried some of sps colony might ended up bleaching out. should i keep those 3 in my sump or just leave the gfo only & removed the np pellets, because as far i know this might be the reason of loosing some of my sps colony since i'd run this in my sump.