Watching SPS die slowly not knowing what is wrong. All parameters in check as far as I know. Waiting on refracto calibration fluid now. After a year and a half tank was doing great then all of a sudden looking BAD. What would you guys recommend? ALK 10 CAL 500 Phosphate .08 I know a little high but took GFO offline thinking may be the problem Nitrate 10. Mainly just SPS looking bad, everything else seems ok but not great.