Hello everyone im a new reefer joining the hobby its been a year after i set up mu redsea reefer 350L. I have this issue currently with my tank and i cant seem to solve this. I change my filter floss every 3 days and blow the rock and sand to get rid of this but always seems to come back. Im trying to make this tank an sps tank but struggling through this point.
My parameters:
Nitrate:10
phosphate:0.7
Alkalinity:8
Calcium:420
Magnesium:1300
Salinity: 1.025
My equipment are
2 ecotech radion xr15 gen 4
Nyos skimmer
Clearwater algae scrubber
I run carbon in a media reactor
lights run at 11hrs 75% intensity.

My parameters:
Nitrate:10
phosphate:0.7
Alkalinity:8
Calcium:420
Magnesium:1300
Salinity: 1.025
My equipment are
2 ecotech radion xr15 gen 4
Nyos skimmer
Clearwater algae scrubber
I run carbon in a media reactor
lights run at 11hrs 75% intensity.



