Hello,

I have been observing my sailfin tang for the last couple of days and he seems to be developing pitted holes behind his eye that seem to be duplicating in number and slowly moving back towards his lateral line. At first glance I thought it might be HLLE. This is the first time I have encountered HLLE, what should I look for? High nitrate levels? salinity? My salinity has gone up a little as it was at a very low level so I raised it slightly to 1.022. Other than that I have not introduced anything new to the tank, as a matter of fact I have had 2 shrimp and a half dozen scarlet hermits die over the last 2 weeks. It seems as if EVERY invert I put in the tank dies within two weeks.

Any ideas? I will be doing a water testing today and will post the readings asap.

thanks!

Sean