So I have always understood and read nitrates bad and phosphates bad. I have had issues with SPS colors and paling. Am I starving my SPS? Trying to keep my water super clean Nitrates read 0 and so do phosphates. I do have hair algae starting to creep up which I am trying to get a handle of. I have a sump growing chaeto and am hoping it out competes the hair algae. Now the thing what I am beyond confused about. I have been reading different threads with people who keep their nitrates above 10 and below 50 ppm and having great success with sps and coloration without any hair algae issues. How does that work? I always thought and understood that high nitrates were reasons for nuisance algae problems. After talking to someone they mentioned my tank might be too clean hence pale coloration of sps. Is that true? If so how do I get nitrates up a bit without full blown hair algae issues? What are you SPS keepers keeping your nitrates at? By the way I am skimming, have about a 20g section for chaeto in my sump, and running GFO and Carbon to keep water as clean as possible with about a 15g per week water change in a 100g tank with 40g sump/fuge.