HELP

[rews]

I have a 75 gallon tank
480W coralife light
60 lbs live rock
protein skimmer for 120 gallon tank
colt coral
green button pollyp
star polyp
plate coral
purple tipped anemone
2X O. clowns
mandarin goby
2X purple fire fish
2X cleaner shrimp

Here is my problem. My anemone just closed up, all of the tentacles deflated, and black goo started coming out of its mouth. I fed it this morning (mysis shrimp) on my way to work and he looked fine. after work I fed the fish and the anemone still looked all right. after supper he just started to close up and then the goo startedd to come out of his mouth. I tried looking for some info on the net and turned around and all of his tentacles are deflated. Whats going on?