What happened to my acans/micros - what can I do?

[jcm1229]

Two days ago, I noticed 2 of may acan and 1 of my micros shriveled up for no apparent reason. My many other acans and micros don't appear to be affected. I've done a water change and run carbon. Anything else I should/can do?

Sorry the pics aren't any better.

 

[sharkbyte1023]

I've noticed mine do something similar if my salt is too high and also when my alk or mag get too low. As soon as i fix one or all of those three they all come right back.

 

[dan10342]

mine did that when my SG was 1.018!! i second salt level

 

[roblack]

Definitely check your KH and mag. Looks like what happened to me over the Holidays, was out of town and the calcium reactor wasn't working and my KH dropped too low. Lost almost all of my micros, acans, and chalices.