green bubble tip anemone spitting out stuff

[bnb180]

Help, I came home today and noticed one of my green tip anemone spitting out a cloud of stuff. My whole tank is cloudy.

I have a 180 Gallon tank with 100 gal sump. Parameters last measure was good. The tank has been stable for a 2 years now. No problems until today. I just did a water change yesterday.

Thanks for any comments.

Jim