Hi all, my polyps seem to get smaller and not open over time
I think light, temp and water quality are ok.
Running zetlight 6600 (same as pacific reef main tank), 26-27 degree c, around 10 on nitrate.
Other corals including elegance,hammerhead, plates etc np and growing.
Any suggestions? Met a friendly who recommended a dip to eliminate possible parasites. Any other possibilities?