<a href=showthread.php?s=&postid=13938579#post13938579 target=_blank>Originally posted</a> by marc price
plums of a streaming blobish dark substance would indicate expelling zooxanthellae (usually), to be replaced by another strain. h2o tempature, light intensity and spectrum are some of the reasons. its not necessarily bad or precursor to bleaching.
Its a wrong topic, but I am too lazy to start another thread.
In my experiences, healthy carpets do expel zooax via attrition, however, not massive like the red gigantea pictured above. It did this for ~ 6 months and finally died.
ReefV, I found that the physiology of magnifica and carpet species in particular, giantea and haddoni are very different in as far as the relationship/significance between deflation and survival.
In the past ~10 years, I have had magnificas that thrived and happy long term though expelling large brown blobs and/ or daily deflation initially. You magnifica looks nice, healthy, and happy. Its colors may even be more intense if it is under a MH.
But, for giantea and haddoni, I have never had one that survived past 6 months after sever lost of zooax. I have seen carpet did this on low tide in wild, and seem to be ok and healthy. So may be in captive, there are less selective types of zoox available for certain specie for procurement. As always, the bright color haddoni and gigantea are the ones that most poorly tolerated to shipping and transition for me.