Anyone ever seen this before? Its been there for about 6 months now. It inflates during lights on and deflates at night. Doesn't seem to bother the coral or its growth. Any ideas as to what it is? I googled it and only found 1 other who had it said he had it for a few years and it didn't bother his coral at all either. He gave the coral away to a friend and as far as he knew the bubble was still there.
this last picture was taken at night when the coral retracts. as you can see the bubble goes away.
this last picture was taken at night when the coral retracts. as you can see the bubble goes away.




