That bubble tip has perplexed me, one day it looks fully healthy then few hours later it looks unhealthy,about a month or so ago I thought it was dying, it had something like its internal mouth hanging out like inside out, then the next morning it was looking normal. I am not sure how old it is, it was on the rock when I bought the tank, I do know there are two baby ones growing in the tank now. I am running Ecoexotic LEDs 12k and 445nm blue. The baby ones are growing good.Should I move it? I thought if it didn't like where it was it would move.I do feed it sometimes with the baster, brine shrimp or Rods and it folds up like it is swallowing it. Any suggestions ? Anyone? All water parameters are normal.