In December we introduced a white pulsing Xenia into our tank. It was about the size of a fist (and came with a super-cute Xenia crab hitchiker tucked inside). It seemed to thrive.
About one month ago things changed and slowly - slowly it started to reduce in size. It looks 'healthy' still opening up during the day and pulsing away. But shrinking.
Now it is the size of a thumb.
Water has been and continues to be stable with parameters right on the mark. All other creatures happy.
After asking in several places I have been adding Iodine, about 10 - 12 drops/day for about two weeks. No change.
At this rate the tiny white crab will be without a home in another week or two. :dead:
Fresh ideas?