Hi all, I have a mixed reef of LPS and some SPS. The LPS in the tank is doing fine but my SPS struggles to the point where some of the montis seems like it will die off and then later will start to regrow. I have had some others like bali green slimer grow really great and then croak. I haven't tried any new sps for a year because of my challenges with them. I recently started checking for nitrate and its always the same and have tried to lower with not much luck. And just today my phosphate. The nitrate is 50. I have not checked my phosphates for a lonng time I checked today and it is 1.14. I don't have an algae problem in my display and my chaeto in my sump, where at one time grew like crazy, only holds on and does not grow. I just got some chaetogro and I am going to start dosing. any tips or insights or any bad effects from using chaetogro? Any other suggestions appreciated.