My tank is doing and looking great, absolutely no algae other then Coraline andi mean none. Not even a patch. Fish are healthy and active, eating a ton. My Zoas are all great, gsp, Torch Frogspawn, blasto are are blooming everyday to the fullest and looking healthy. Only thing that is not is my monti cap is losing Color. Recently tested my nitrates with API test kit results read around 160 ppm. Tested 4 more times between two days. All the same result. I then proceeded to test just my distilled water and then a new batch of mixed water both read 0.leading me to believe that my tank is actually that high in nitrates?! Shouldn't I see some ill results? Algae, anything? Or is there maybe another way that I'm getting a false reading. I'm doing every step perfectly. Recently checked for phosphates as well with salifert kit and nothing at all. Any help? Ideas?