Hi everyone, I need help something is definitely happening in my tank and I dont know what is. I have attach pictures to help you guys see what Im talking about. My SPS have lost their color and so have my acans, I have lost two acans already and im loosing my frogspawns heads, I can see tiny black spots in the tips of the frogspawns on a couple of heads yesterday and today I see it on 3 more. What can it be? and if someone knows how can I fix it the problem? Your help is greatly appreciated.
Tank is 120 gallon with a 30 gallon sump and a 30 refugium.
Parameters:
Cal 440
Alk 8.4
Mag 1290
Phos .10 (im working on it I know is high)
PH 8
Nitrate 10 (down from 25 3 days ago)
Temp 78
I did a 13 gallon water change yesterday and I will do another one tomorrow.