So I have corals that are Browning, some are normal color, and some have slowly lost tissue. About 5 months ago I changed my sump with a new one. When I changed my sump i took out my sand and lr.. now I'm having the issues started above along with some air algae.
Alk 14.2
Mg 1470
Cal 475
Po4 .05
Nitrate last tested .05
Now I know my alk, mg, and cal are high. My po4 and nitrate arent all that high. What else would cause my issues. My sump is bare bottoms with cheato that melted away 2 weeks ago and now have a small piece left. I have 2 bricks of marine pure. And I was having an issue with dino in sump only. Dino is now gone now. Should I add sand and more LR to my sump?
Alk 14.2
Mg 1470
Cal 475
Po4 .05
Nitrate last tested .05
Now I know my alk, mg, and cal are high. My po4 and nitrate arent all that high. What else would cause my issues. My sump is bare bottoms with cheato that melted away 2 weeks ago and now have a small piece left. I have 2 bricks of marine pure. And I was having an issue with dino in sump only. Dino is now gone now. Should I add sand and more LR to my sump?


