Hello all I'm dealing with high nitrates that will not go down. I was at 160 plus and did multiple water changes to bring that down to 25. In about two weeks it already crept up to 55 plus. I currently have a rollermat, bio pellets, larger skimmer, and turf scrubber to help with it but I'm not sure if it is. My phosphates are at 0 checked with mass spec from icp analysis. Fish do fine. Alk mag and Calc are all in acceptable ranges but I'm also losing corals like encrusters. Softies and zoas seem to do just fine along with rock flowers. I did upgrade my lights to radion r30 g6s. I have a 120 gallon tank. I'm kinda at my ends wits and not sure what else I can do. I also note that I seem to keep getting a small amount of ammonia and nitrite but not sure where it's coming from as nothing has died.