Looking for some help with high nitrates but low phosphate. My tank is around 2.5 years old and around 120 total gallons in my system. My nitrates are 50-60ppm (Hanna checker) and phos around .02 (Hanna checker) everything in the tank is fine, no algae outbreaks or anything but I would like to slowly decrease nitrates if I can to a safer range. My filtration currently is a skimmer, ATS (clear water 50) Thieling roller mat, and a small amount of carbon in a reactor. I do auto daily water changes and change around 2 gallons a day. I don't want to do anything fast as the tank is ok now but looking for any tips on slowly lowering nitrates with out zeroing out the phos. Let me know what you guys think. Quick pic with no filter to show off!