I have been trying to get rid of my phosphate problem for a while now. However I have gotten very aggresive in the last 7-10 days with out much luck. I have been running a very wet protein skimmer (etss 600) and been running rowaphos guard. While the rowa worked at the start of things I haven't seen any additional drop in readings. Right now they are about .50ppm does anyone have any suggestions. I have heard that phosreactors work great. By the way I have a sand bed and the tank is 125 gallons.