Bubble Coral Receeding
I have had a large bubble coral for a year that has done well. About a month ago it stopped opening and it has slowly shrunk to a quarter of the size. Now I can see it has started to recede. I used to feed it once a week or so and then I stopped for the last few months. I have started again to feed it mysis shrimp but it had not helped. I have a 90 gallon with T5 lighting, 6 bulbs. It is placed at the bottom of the tank in a low flow area. It was near a frogspawn and I thought maybe it got stung so I moved it but nothing has changed. My parameters are all good and the only other thing that has changed in my tank is that I started adding iodine because my cleaner shrimp were losing their antennas. I stopped for over a week and it didn't help. All my other corals are thriving. Any suggestions to nurse it back to health?
Leanne
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