got my hammer coral about a 3 weeks ago, had a bit of damage from shipping. a few days later it started getting brown jelly on skeleton, so i fragged the bad part off, as well as some good part. hammer was going strong for about 2 weeks, growing and extending nicely. now when i look this morning, looks like the hammer is retracting a bit, and looks like brown jelly again. what to do? params are all in check.