Very low nutrients buy SPS progressively browning - Please help me trouble shoot

[biecacka]

Also check your RODI unit. I have been having issues with some pale/brown corals and others look great. Could be longer acclimation to my tank as it’s newer corals (under 3 months in my system) but I was checking everything and n03 5-10 and p04 is .o7 (maybe a tad low) but my tds was 11 coming out of the unit. Exhausted filters...maybe? I don’t know?


Corey