You right,, we have to maintain but my mistake was I did not monitor nutrient b/c I went overkill with a fuge with miracle mud, marinepure block (the large one), oversize skimmer, adding chemi pure elite, and 2 mp40 working on overdrive so now I am trying to add nutrients. My theory was if I keep it low I will prevent dinos or other algaes.
I've only made 2 small water changes since I set it up - replacing 10 gallons when adding fish lol.... Mainly because I believe in water change only for replenish trace elements used by corals,, During the first few months nothing was in the tank really. I would ease up on the water change for every 2-4 weeks and in small amount. It really becomes a necessity to do larger water changes as your tank matures because the larger corals absorb all those other trace elements we don't monitor such as potassium, maganese, iodine, etc - too find after few years everything RTN or just stop growing for not explainable reason.. Plus their is such thing as over kill maintainence.. just try to find a balance with nutrients and feed the corals - definitely easier said than done.
I've lost a ton of color of my stylos and birdnest from running to clean. I have forgotten what the colors are suppose to look like until I go on the web and see all these stunning tanks

Well get there!