I have been on and off for a few years. I have a hard time keeping corals alive. yes I checked and I have high phosphate. I am trying to lower them but I wont go down. sad to say my phosphate are at .58ppb. I have a skimmer, a hang on the back filter with chemi pure blue and phosguard in it. in my sump I have 2 reactors I'm with bio pellet (which keep stop thumbing ) and the other with Rowaphos.i did a water change at 50% 2 weeks age. going to do one again this weekend at 60%. my macro algae died hope to get more this weekend. my red and green Montipora frag, jack o lantern, war coral are dying. any tips please I love to have a tank with coral not just fish.