I have an imbalance in nitrate and phosphate. Nitrate is 0.0 and phosphate is .04. Can I dose nitrate without effecting phosphate? If so, what would be suggested to do so? Im using Hannah checkers to measure water. Tank has been up and running for approx 10 years ,120 gal. Cheo in the fuge and using siporax and marine bio blocks in the sump for bio filtration. Very little algae growth and mostly softies with a few sps. Lps doing fine Sps struggling. AlK 9.1 CAL 475 MAG 1330. Running omega 150 skimmer and Radion xr 30's g5 on mobus. Any thoughts?