Ok my sand contains silicate which has lead to the obvious diatom outbreak that im trying to keep in check. Im thinking I may just remove the sand and replace it with more saltwater appropriate sand. Any suggestion on how to do this to tank that is up running and stable not to mention stocked. Should I romove the livestock temporarily into the sump, shut off all the pump and remove it by hand or suck it out with a syphon. Still not sure if I will do this considering putting everything through stress and screwing up my parameters. I just introduced a dozen blue leg hermits and some nassarius snails so they may help.