For past 7 months, nitrates and phosphates are too high. Bio loads not the problem.Water changes every 1-2 weeks 10% , Did a 30 % Dec 1. Cut back feeding.Flakes in am and frozen mysis shrimp in pm. Change sock every week. Tested RO water. Now using GFO in reactor for past 4 weeks.Below is chart for month of Dec for water chemistry. No algae problems and corals are fine. Using Hannah tests for Alk,Nitrate,phosphate. Any thoughts??