Are any of you zeoheads using vitamin c?? I recieved a free sample and used it once at three week intervals. My tank is zeovit, and have read that it vitamin c, being another carbon source, may have ill effects. My corals acctually look slightly better, but It could be my mind tricking me. The pro's on the zeo boards seem to not give a straight answer on the subject. So does anyone have ant feedback?? Thanks