colt dying...

[mjohnson86]

Is it normal for colt to not like a clean tank?

My levels on everything are pretty good, other than salinity which has fallen to 1.021...

I noticed yesterday that some of my colt is dying off... as well as some of my xenia...

I looked at calcium and alk as well as nitrates and found nothing wrong...

Most of my colt (which seems to be about 23 heads) look great but 2 pieces seem to be dying...

 

[NanoReefWanabe]

my colt died last month and i have no idea why either, just withered up...yet my leathers, kenyas, zoas, torches and SPS are all doing fine, with the exception of my montiporas which are also dieing and i dont know why...