We brought in a new blenny about 2 weeks ago. About a week after that he just disappeared, so I assumed he died. Physical appearance before that was normal, activity was good, eating well. Now, within this week, I have lost one of my clowns and my Filamented wrasse. This morning my Pygmy angel is swimming upside down and sideways. My other clown and firefish are still swimming around but not like usual. No fish have had any obvious signs disease except the angel that seems to now have developed some ich. We do have the usual CUC of snails and hermits. Also had 2 peppermint shrimp, but found one dead this morning.
These were lastnights readings. Did a water change as soon as I saw the nitrates!! Is it worth setting up a QT? Please help!!!