The title sums it up, my tank has been set up for about 14 weeks at this point, everything has been stable besides minor fluctuations in alkalinity. Nitrates have been hovering around 5ppm for a while but over the past 2-3 weeks they've declined to zero as of today. I've read that having zero nitrates and phosphates isn't ideal but everything seems to be doing well as of now, I did just also introduce six new corals to the tank including a medium sized frogspawn and torch (everything else is pretty small). So is there something I should be doing to "fix" this? I feed frozen mysis daily and sprinkle a few pellets 1-2x a week. Here is a shot of my parameters over time: