is it possible to have cynobacteria in my sump/fuge but not in the main tank?
I have used chemi-clean before to get rid of the cyno and used row-phos since then to get the phosphate down. that was about 2 months ago and now I have noticed the cyno again.
I have recently add MH
lighting and upgraded my seaclone skimmer to an Aqua-C Urchin. After that I did a series of 10 gal
water changes ever other day for a week to lower my nitrates. the only new addition to the tank was a coral banded shrimp.