What do dying zoanthids look like?

[dickwayne]

On Saturday I bought 3 zooanthid colonies. One opened up in a few hours, one opened up the next moring. The third, however, has not opened up yet (four days later). A few of the polyps did open for a little bit, but now they are closed. Not only that, but the colony lost a few polyps today.

 

Is this thing toast, should I throw it out? All water parameters are normal, and everything else in the tank is fine. Sorry, no pictures to show. Thanks in advance.

 

Rich

[harbingerofthefish]

(from my exp in my tank) when they die they just stop opening and "dissolve" When the polyp is gone it's gone without a trace. I got 4 little polyps at a LFS about 3 weeks ago or so. The larger of the 4 opened up the first day, the 3 smaller ones didn't. After about a weeks time the lage one had stoped opening and slowly the poylp shrank down to nothing. No trace that it was ever there. After it died the 3 little ones opened up the next day. Why all this happened? The only thing I can guess is the tank at the LFS they were in had MH lighting. I only have PC. Matbe the little ones were able to adapt.

 

So anyway, don't chunk the ones that are still there.