I’ve done a bunch of reading on the topic of undetectable nutrients but I am still confused about where to go from here as there are so many opinions. My tank has been running for about a year and is a lower stocked mixed reef with Zoas, hammer and torch corals doing well. I have a couple of small acro frags and colonies that are getting STN and going pale. The tank and sump is about 200L and was started with dry rock and dry sand. I dose to keep parameters stable:
Ammonia and nitrites 0
Salinity 1.026
Nitrates 0 (Red Sea pro)
Phosphate 0 (Hanna ulr)
Alk 8dkh
Calcium 420
Mag 1320
10% water change every week or two.
Only filtration is a skimmer. I have some cyano and a lot of hair algae. Is it my dry rock that is binding all nutrients? Should I dose no3 and po4? I have been feeding heavier with no detectable rise.
Ammonia and nitrites 0
Salinity 1.026
Nitrates 0 (Red Sea pro)
Phosphate 0 (Hanna ulr)
Alk 8dkh
Calcium 420
Mag 1320
10% water change every week or two.
Only filtration is a skimmer. I have some cyano and a lot of hair algae. Is it my dry rock that is binding all nutrients? Should I dose no3 and po4? I have been feeding heavier with no detectable rise.